strange ISRC data preventing me from making DDP

i made a new montage and CD layout and the ISRC fields autofilled themselves with bogus data that i can’t delete.

this project has no ISRC codes, so i want the fields to be blank, which i do all the time in WL 9… but i can’t delete the letters and numbers… they just pop back in.

the mounting bugs in WL 10 is frustrating, i regret the jobs i started using it on and basically have to do over…

anyone know how to get rid of this data in the ISRC fields?

screenshot attached.
Screen Shot 2019-11-26 at 8.59.18 AM.png

Are you using WaveLab 9.5.50?