Does anyone know how to make a new repeating field that holds all the values of another repeating field plus the content of another text field?

Thanks

Yes this can be done with calc only.

The attachment works in 2 modes:

When allow empty is No, the inner empty repetitions (like 3 rep is empty but the forth has some value) are not allowed.

Otherwise the repeated fields are concatenated a they are (including empty reps)

I have assumed that repeated fields are of type text, otherwise use appropriate nill values ( +0 zero for numbers, + TexttoDate("") for dates and + TextToTime("") for times) in formula for concat field

Dj

Concat.fp5.zip