Post-Migration Cleanup: What to Do After Moving to HubSpot

Migration day feels like the finish line. It's not. It's more like the halfway point. The data is in HubSpot, everyone's breathing a sigh of relief, and then someone opens a contact record and says "where are all the notes?" Or a sales manager pulls a report and the numbers don't match anything from the old system.

Post-migration cleanup is where the real work happens. Skip it and you'll spend the next six months explaining why the new CRM "doesn't work." Here's what to do, roughly in order.

Immediate Validation (Day 1-3)

Count everything. Contacts, companies, deals, tickets. Compare against your pre-migration inventory. If Salesforce had 42,000 contacts and HubSpot shows 38,000, you have a problem. Find the gap before anyone starts working in the system.

Spot-check critical records. Pull up your top 20 deals by value. Are the amounts right? Are the contacts associated? Is the activity history attached? Do the same for your biggest company records. These are the records people will notice if they're wrong.

Test associations. HubSpot models relationships differently than Salesforce. Check that company-contact, contact-deal, and deal-company links survived. Broken associations are the most common migration casualty and the hardest to fix after the fact.

Verify user permissions. Make sure everyone can log in and see what they should see. Nothing kills Day 1 morale like "I can't access my deals."

Data Quality Cleanup (Week 1-2)

Even the best migration imports some mess. Now's the time to catch it.

Run duplicate detection. Migrations frequently create duplicates, especially when Salesforce Leads merge with existing Contacts. Use HubSpot's native dedup tool as a starting point, but also check for near-duplicates it misses (same person, slightly different email or name spelling).

Identify missing data. Run reports on key fields: how many contacts have no email? How many deals have no amount? How many companies have no domain? Some of this was missing in the source system. Some got lost in translation. Either way, you need to know the baseline.

Standardize formatting. Phone numbers in 14 different formats. Country names mixed with country codes. State names vs. abbreviations. This is the unglamorous work that makes everything else function properly.

If data hygiene wasn't a priority before migration, it needs to become one now.

Rebuild Your Processes (Week 1-4)

Your old workflows didn't come over automatically (and even if someone recreated them, they probably need adjustment).

Prioritize by impact. Lead routing and assignment: get this working Day 1 or sales grinds to a halt. Deal stage automation. Notification workflows. Then marketing automation, reporting, and everything else.

Don't just recreate what you had. Migration is the chance to fix processes that were broken in the old system. That 47-step workflow someone built in Salesforce three years ago? Maybe it should be 12 steps in HubSpot. Think about whether workflows or sequences are the right tool for each use case.

Test with real scenarios. Create a test contact, run them through your lead assignment workflow, check that notifications fire, verify the deal gets created correctly. Don't just check that the workflow is active — verify end-to-end that it does what it should.

Training and Adoption (Week 2-4)

Your team is now using a new system. Even experienced CRM users need time to adjust. The interface is different, the terminology is different, the click paths are different.

Role-based training sessions. 60-90 minutes per role, focused on "here's how you do your daily tasks in HubSpot." Not a feature tour, not a demo. Practical "here's the 8 things you do every day and here's how to do them here."

Office hours for the first two weeks. A standing 30-minute daily slot where people can drop in with questions. The volume of questions in week 1 is enormous. By week 3 it drops to almost nothing.

Collect feedback actively. "What's broken?" and "what's confusing?" are the two most valuable questions. Ask them repeatedly during the first month. Fix things fast to build trust in the new system.

The 30-60-90 Day Check

30 days: Is everyone logging in? Are there any blockers preventing daily work? Are data quality issues getting worse or better? This check is about survival — making sure the system is usable.

60 days: How's adoption trending? Are people using HubSpot for everything or maintaining shadow spreadsheets? What refinements do the workflows need now that they've run with real volume?

90 days: Is the system delivering value? Can leadership pull the reports they need? Is the team faster or slower than before? What's the optimization plan for the next quarter?

If you don't do these check-ins, small problems compound. That minor data issue from week 1 becomes a major reporting problem by month 3.

The Mistake Everyone Makes

Treating migration as a project with an end date. It's not. It's a transition that takes 90 days to stabilize and 6 months to fully optimize. Budget time for post-migration support. Your team needs it, and your data needs it.

Just finished a migration and things feel off? Check out our migration services (we do post-migration cleanup too) or book a discovery call to talk through what you're seeing.