Skip to content
DataUntangler

Data cleaning for CRM migrations, imports and duplicate lists

Posts for the person with a cutover date or an import due: moving between Salesforce, HubSpot, Zoho, QuickBooks, Xero and NetSuite, choosing a cleaning tool, and getting duplicates out before they are billed or loaded.

19 posts, written for the file in front of you

Before the import, not after it

01 Everything published
  1. 1 October 2026 7 min read

    Xero to QuickBooks Conversion Without Duplicate Contacts

    The Xero to QuickBooks Online conversion moves your customer and vendor lists as they stand, into a company file that has to start blank. Duplicates that were harmless in Xero turn into split customers, split vendors and split 1099 totals. Here is how to clean them before the switch.

    Read the post
  2. 30 September 2026 7 min read

    Pardot to HubSpot Migration Without Duplicate Contacts

    Most Pardot accounts allow several prospects with the same email address, one per Salesforce lead or contact. HubSpot keeps one contact per email. A Pardot to HubSpot migration is where those two rules collide, and where you decide which record wins.

    Read the post
  3. 29 September 2026 7 min read

    Marketo to HubSpot Migration Without Duplicate Leads and Contacts

    Marketo does not deduplicate leads that are already in the database, and leads created through a Salesforce sync skip its email check entirely. A Marketo to HubSpot migration is the one moment you can fix that cheaply. Here is what to clean in the Marketo export before the HubSpot import, and what a real pass on one finds.

    Read the post
  4. 25 September 2026 8 min read

    HubSpot to Salesforce Migration Starts With Deduped Contacts and Accounts

    Salesforce does less duplicate matching on a load than most migration plans assume. The Data Import Wizard compares one field, Data Loader compares none on an insert, and HubSpot contacts with several companies have to be squeezed into one Account. Here is how to clean the export so the load does not double your records.

    Read the post

Cleanup pages by system

Every post above points at one of these. Each page covers one CRM, email platform or accounting system, with the export steps and the duplicate rules that system uses.

Reading about it is slower than doing it

Load one of the messy samples and read the diff. It runs in your browser and no card is required.

No card required. Your file never leaves your computer.

Clean a file