Would you consider changing the key field of the table to be a text field with a value of those three fields hyphenated together.
The Dara entry by hand would be enforced by a form rule which would take the value in a formula field and copy it to the Key field
Your import file would have to have this hyphenated Keyfield as well, and that could be done in EXcel.
There was also a change on this last weekend's release to allow merging of imports based on a unique field as opposed to only being able to merge import based on the record ID or the key field. It was bent to address this exact same situation for automated import. But I believe you are doing an important using the regular user important process., as opposed to by API.
I think I�m going to go back and read the release notes for the November release Tward to stay in that a bit better.
