Importing Prospect Ratings ImportID error

Hello all -

I have a lot of experience importing in RE, but havent done it in a few years. I just started at a new org and I am attempting to import some prospect ratings in the validate mode.

Here is the issue im coming across - when I attempt to bring the file in WITHOUT the importID, it tells me i am required to have one (i have the constituent ID). When I add the column in with no entries, it tells me I cannot do that either.

I'm kind of stumped. I had all my premade files at my last job so I was rolling along well, but Im starting over here and wondering if I am just missing one little detail. I combed through the knowledgebase (having to change encoding in notepad was new!) and can't seem to find this answer and i think support is no longer a thing, so i am asking for your help.

thanks!

These are the current headers im using