Importing file with macro with primary key field added

[Lori2836]

I'm trying to import a file using a macro, but need to have a primary key
added to the file each time its imported. When importing manually, the
primary key field can be added, but I can't figure out if this can be done
using a macro. I thought by saving the import spec at the very end, once I
clicked on "add a primary key field" it might save it, but it doesn't.

Anyone have any clue?

Thanks,
Lori