@Juliannafb – There is a method for manually uploading attachments via SQL, but it’s very technical and a huge pain. It’s currently the only way to batch upload files to tables when filenames can’t match the field used as the key value (in my case, I had CollectingEventrecords which have IDs formatted like this “YYYY:####”, but the “:” symbol of course can’t be used in a filename, so the only way to batch upload was to do it manually.
This thread has details of that approach. It’s really only practical if you have very attentive IT staff with direct database access and you want to do a big upload all at once, not practical for regular use.
I think this issue is another one that would be best resolved by implementing mapping files for batch attachment which were previously supported in Sp6.