Transfer relational data from one DB to another production DB currently populated with data - MySQL
You'll have to remap them to a non-conflicting insertion range, and to create that you'll need to adjust the AUTO_INCREMENT setting on each affected table.

For example, alter the AUTO_INCREMENT values on the affected tables to introduce some headroom. If you need to insert ~100 records into a table with the increment set to 2500, then set it to 2700. That way you have 200 non-conflicting IDs to work with.