Importing records into existing
I have a CSV file that I'd like to import. It has dates and several other fields that I can match against fields in FileMaker. I made a copy of my database to try this out. Unfortunately, it didn't match dates. So, rather than filling in the empty fields in existing records, it just adds new records with only the imported values.
Is there a way to have the import match against dates and modify/append to existing records? I want the import to fill in matching fields on existing records.