Is it possible to pre-assign conditions based on a participant ID?

To put it briefly, I'm running a two-part study. In the first survey, participants make a choice or are assigned one of eight options of a stimulus. In the second survey, a week later, participants will need to see manipulations/questions related to that specific stimulus. So I need to let Qualtrics know "hey, the person who enters ID number XXXXX sees stimulus A, the person who enters YYYYY sees stimulus B, etc.". I thought that maybe this can be either built into one survey, where one of eight blocks is presented depending on the ID they enter, or perhaps they could be re-directed to one of eight separate surveys after entering their ID, but in either case I would have to somehow be able to have Qualtrics refer to a list of participant IDs and corresponding 'conditions'.
The issue is that I can't use the contact list to carry over embedded data because I am unable to collect participant's email addresses (I'm not distributing through Qualtrics). I tried this method but the action task would not complete without a valid email address. The only 'identifier' connecting the two surveys would be a pre-assigned participant ID that the respondents enter at the start of the each survey.
Is there a way to do this without having to manually enter each and every participant ID into the Branch logic in Survey Flow?
Many thanks in advance!