Are you running on Core 13.0 or 13.3?
Because i see in your error a reference to 13.2, can be a problem.
Do you have use mount points for data/metadata (good), or you were putting everything inside the original jail (kinda bad)?
But honestly, in both case, i would run the dan’s script from scratch just mounting new datasets (according to the guide), after have somehow recovery the data from the backup… Should go smoothly