What will you do if you find that your migration process has been completed, but there are no conversions to sales, the information on your clients is missing, and your campaigns have failed? The thing is that all this happens prior to the launch, since the team treats it as a software issue, while in reality, it is a business issue.
Migration to another marketing automation platform involves much more than just importing your contacts and duplicating your campaigns. It requires a strategy on how to ensure quality, integration, compliance and continuity of campaigns. A great migration will preserve current activities and enhance reporting, lead routing and campaign performance.
All you need to successfully plan, run, test and optimize your migration so that you don’t carry problems from the old site forward.
Build a Clear Migration Strategy
Prior to picking migration dates and migrating data, determine the criteria on which the new marketing automation system will be better than the existing one. In case of issues related to reporting, lead management and campaigns of the existing solution, these can become KPIs for measuring success. Reporting quality, speed of lead management and campaign performance are some KPIs that could be used for that purpose.
Pick a cross functional team that Marketing Operations should engage and what is required to be addressed by the campaign IT should take care of Technical Architecture, integrations, access control The CRM for Sales needs to examine Lead fields, data flight, sync, and third party validation legal should verify consent data, data operations and then satisfy existing obligations with GDPR, CCPA. Owner each piece. Otherwise decisions are being pushed on to the next group.
Finally, create an action plan for the 60–90 days to come. Start with requirement review and Acceptance success validation, followed by data upgrade, platform build and configuration, integrations, testing, and finally the cutover (make sure to factor in any unforeseen data problems and signoff by stakeholders). The shorter project schedule will get your new platform operational sooner, but will also have less time to discover problems that could otherwise affect your production campaigns. The goal is a managed transition with defined accountability and agreed benchmarks, and enough time to ensure each step is completed successfully.
Also Read: Accelerating Digital Transformation Through Agile Marketing: Strategies for Business Growth in 2026
Audit and Clean the Data Before Migration
The migration of low-quality data to the new marketing automation tool will cause issues right from the start. Duplicate contacts will misrepresent the statistics, inactivity will raise the expenses associated with the database management, and obsolete email addresses will increase the number of bounced emails. Firstly, an audit of the current database is necessary. First, the system needs to recognize inactive contacts, delete hard bounces, and sort out duplicate contacts. Finally, the policy needs to be set up regarding retention, archiving, and deletion.
Handle consent records first. Address export exceptions, unsubscribes, and suppression lists prior to moving contacts for the campaigns. These should be reflected accurately within the new system such that the system continues to ignore these records in the marketing communication process. It is critical that this move should not override the user’s decision to opt out. Conduct testing of the suppression list before initiating marketing campaigns using the new environment.
Secondly, prepare a field-mapping spreadsheet that contains all the fields mapping from one environment to another. Include details on field name, data type, field formatting requirements, required value, and field transformation that is to take place during the migration process. The key to focus on when doing mapping includes lifecycle stage, lead source, consent flag, scoring fields, and custom fields.
Check platform-specific data limitations before finalizing the migration scope. Marketo retains activity and campaign membership data on a rolling 25-month basis, while high-volume activity data has a default rolling retention period of 90 days. Older data beyond the applicable retention windows is no longer available through its user interface. HubSpot, meanwhile, duplicates contacts by email address and companies by domain, with record IDs or unique custom properties also available for deduplication during imports. These rules should inform your audit and validation plan.
Rebuild Assets and Workflows Instead of Copying Them
Once the data is ready, turn to the assets and workflows that support daily marketing operations. Start with a complete inventory of landing pages, email templates, forms, nurture journeys, lead-scoring rules, and automated notifications. Record which assets teams still use, which need updating, and which can be retired. This prevents outdated campaigns and redundant workflows from quietly entering the new environment.
Do not fall into the trap of recreating all the existing journeys. The workflow designed to overcome deficiencies of the legacy system may result in additional unnecessary actions within the new system. Evaluate each individual journey in terms of its original purpose. Can the new system deliver leads based on the criteria better? Can scoring be adjusted to take into account the engagement and fit? Can teams reduce unnecessary handovers or branches? Redesign the workflows in terms of today’s business needs.
Integrations need the same attention. Link back together all of the CRM, webinars, lead enrichment software, and other marketing integration solutions that use data. Test the synchronization, triggers, and error handling on each integration. A campaign may appear ready while leads, registrations, or engagement signals fail to reach the right system.
Also check what the migration method can transfer. If you’re migrating 365 Customer Insights Journeys using the documented Configuration Migration tool by Microsoft, then interaction data and triggers will not be transferred. Also when Journeys are migrated, or restored or copied, the Journeys switch from Live to Stopped state. Teams need to take these limitations into account when recreating and validating campaigns.
Configure Authentication and Warm Up Your IP
Even a technically successful migration can lead to a failed migration if the emails go into spam folders. Prior to sending your email campaigns via the new email marketing platform, make sure that you set up domain authentication and create a scheduled sending process. Adjust your SPF, DKIM, and DMARC settings as per the guidelines of the platform.
Google insists on the setting up of SPF or DKIM by all mailings to any Gmail account. Mailings delivering over 5,000 emails daily to Gmail accounts have to use SPF, DKIM, and DMARC. They have to include one-click unsubscribe feature for all their marketing and subscription emails.
Whereas a dedicated sending IP is used in the case of the new platform, you should plan your IP warming process for about two to four weeks. Send emails in small quantities and to engaged subscribers, and as the performance improves gradually, increase your volume of sending email. Do not increase volume just because of meeting your deadline, but only when performance begins to decline.
Lastly, replace the existing tracking codes in the old platform with the new tracking codes in the new platform. Confirm that page visits and form submissions and other similar events are captured properly. This will help you test the signals before you automate campaigns based on those signals. Though these three elements sound very technical, issues here can immediately affect your campaign results.
Test, Validate, and Go Live
Prior to launch, do a structured quality check using internal seed lists. Check forms, ensure leads land on the correct records in your CRM, check that dynamic content displays properly, review workflow enrollment rules and if you’re using a branching diagram to visualize workflow sequences. HubSpot, for instance, allows you to visualize how a record would traverse a workflow branch and actions, without actually running it.
Schedule an overlap of one to two weeks where the two platforms are running side by side, with specified rules to manage double sends and conflicting updates. Migrate records, integrations, and campaign activity during the transition. Archive the old platform only once 8 or more critical workflows have been validated, flows are performing correctly, and team has verified no dependencies exist.
Conclusion
A move to a new marketing automation system does not happen until that system works effectively during daily activities. The first 90 days after implementation are very important. Observe how well data flows, lead distribution, email delivery, engagement in campaigns, and accuracy of reports work to find out about any issues before running big campaigns. Look at the performance compared to the KPIs set before migration, and fix the workflow in case of underachievement. People need to gather information from the marketing department, sales department, and IT department in order to find any issues that could not be found through technical assessment.