This doesn't seem difficult in theory, but I can't figure out a way to make it happen with automations.
Situation: In my Training Feedback table, I have a lookup field "Trainer (from Training Taken)" (a lookup from the Master Training List table), from which I need to copy over the field values to the linked record field "Trainer" (linked to the Trainers table), so I can associate trainer feedback data directly with the trainer(s) in other places in my base. The problem is when there are multiple trainers (i.e. multiple values in the lookup field). When attempting a simple transfer of field values to the linked record field using an Update Record automation, the automation fails for multiple trainers. I tried a repeating list automation to Update Record for each trainer in the list of "Trainer (from Training Taken)", but that results in only the final value in the list of trainers being added to the linked record "Trainer" field, since the automation overwrites the value each time it repeats the process. Does anyone have any ideas for other methods I could try to get all of my data from field to field? Thank you!