We ran into an issue when we uploaded a list into Marketo. The list contained existing records which were then merged, as expected. However, date/time fields that weren't even on the Excel sheet were then being updated. See attached screenshot.
I read that any imported date/time fields are treated as Central Time and our organization is using Pacific Time. (See article: Import a List of People - Marketo Docs - Product Documentation )
However, I'm not sure why this would matter because we aren't importing any date/time fields.
Does anyone know what may be happening?