if Janet ran her two queries, MY data has been wiped out,
AFAIK, the only way you can avoid this with a single table in the BE is to log user data against the records, and only delete those records for the specific user. Of course, the user id has to be part of the append. I think ranman256 is also correct; each user should be using the same path, but if that's not possible, those paths should be table values associated with the user, else you're going to need the msoFileDialogFolderPicker (or file picker).
The more we hear silence, the more we begin to think about our value in this universe.
Paraphrase of Professor Brian Cox.