How do I move off a subscription without losing data?

The fear that stops people leaving a tool they have outgrown is losing data in the move. It is a reasonable fear, and the answer is not courage but order. Done in the right sequence, with the right checks, a migration keeps every record intact. Done in the wrong order, it can genuinely lose things. Here is the sequence that keeps you safe.

Step by step

1. Export everything and check it is completeBefore you touch anything else, export a full copy of your data from the current subscription and open it to confirm it is genuinely complete and usable. Do not assume the export worked; look at it. Check that the records are all there, that the connections between them survived, and that the format is one your replacement can read. This exported, verified copy is your safety net for the entire move, so make it first and keep it safe no matter what happens next. Save it somewhere separate from both the old and new systems, so that even if something goes wrong with either, this copy survives untouched. If the export comes out in a format you cannot easily read, or is missing parts you expected, that is vital to discover now, before you have started dismantling anything, because a broken export found at the start is a problem you can plan around, while one found halfway through a migration is a crisis.
2. Set up the replacement and import a test batch firstGet the new tool or system ready, then import a small test batch before the whole lot. This catches format problems, mismatched fields, and lost connections while they are cheap to fix, rather than after you have imported everything and have to unpick it. Once the test batch imports cleanly and looks right, import the full data set. Importing in this order turns a risky all-or-nothing move into a checked, controlled one, and it means that if something is wrong with how the data maps across, you find it while only a handful of records are affected rather than after you have imported everything and have to unpick a large tangle.
3. Reconcile the new against the oldWith the data imported, compare the new system against the old one carefully. Do the totals match: the same number of customers, orders, records. Spot-check individual entries to confirm nothing was garbled or dropped, and pay particular attention to the trickier fields, dates, currency amounts, anything with special characters or accents, since those are where silent corruption most often hides. This reconciliation is the step that proves nothing was lost, and it is the one people skip in their hurry to finish. Do not skip it. A migration that looks done but quietly dropped a tenth of your records is worse than one you know is incomplete.
4. Run both in parallel until you trust the new oneKeep the old subscription live alongside the new system for a while, using the new one for real work but with the old one still there to fall back on and check against. This parallel period is your insurance: if something surfaces that the reconciliation missed, the old system still holds the truth and you have not lost anything. Resist the urge to cancel early to save the fee. The short overlap cost is trivial next to the cost of discovering a gap after the old data is gone.
5. Plan the switch-over so nobody is caught outBefore the day you move real work onto the new system, tell everyone who uses it what is changing and when. A migration that is technically perfect can still fail if half the team keeps entering data into the old tool out of habit, splitting your records across both. Pick a clear cut-over point, make sure everyone knows to use the new system from then on, and give people a quick way to ask questions when something looks unfamiliar. Keep the old system readable but stop writing new data into it, so there is one place the current truth lives. Handling the human side of the switch as carefully as the data side is what makes the difference between a migration that sticks and one that quietly unravels in its first week.
6. Cancel only once the new system is provenWhen the new system has run cleanly for long enough that you genuinely trust it, and you have kept your verified export safely, then cancel the old subscription. Before you do, take one final export from the old tool as a last archive. Then close or downgrade the account so you stop paying and stop leaving an unmonitored copy of your data online. Cancelling last, deliberately, is what separates a clean exit from a hopeful one.
7. Keep the archive and record what you didAfter the switch is complete, do not let your safety net evaporate. Keep the verified export you took from the old tool somewhere under your own control, clearly labelled and dated, so that if a question arises months later about a record that predates the move, you can answer it from your own archive rather than wishing you had not cancelled. Write down, briefly, what you moved, when, and how the fields in the old system mapped to the new one, because that note is invaluable if anything ever needs reconciling or if you migrate again in future. This final housekeeping is unglamorous and easy to skip in the relief of finishing, but it is what turns a successful migration into a genuinely finished one. A move that leaves you holding a clean archive and a clear record of what happened is one you can stand behind; a move that leaves you with nothing but a working new system and a vague memory of how you got there is one you will regret the first time an old detail matters.