Is there a way to (where can I) find prior list imports? I need to verify if record changes were a result of a list import.
If you are looking at a specific record and looking to see if a data value change was due to a list import, you can look in the activity log history and do some detective work.
You can try looking at the audit trail to see what the last list imports were.
Do you know the name of the static list where it was imported into?
Where have you imported the lists to? You can look at the static list where you made the import and look at the lists activity history to see all the data changes that happened.
I'd recommend always importing lists directly into programs when you can help it - to automatically assign membership and acquisition upon import. This also makes it easier to check performance and quickly spot check imports.