Your proposed approach is lacking several details re: a WS setup (eg, you don't mention anything about the logical connection, nor do you appear to distinguish between the active/primary and standby/replicate databases) ... so I'd need for a bit more detail of what you're trying to accomplish, eg ...
What do you mean by 'rebuild'?
Are you looking to resync the RDB with a dump from the PDB? (If so, what is your RS version?)
Are you looking to rebuild the WS pair from scratch?
Are you looking to replace the active/primary or standby/replicate database in a current WS setup? [If so, could you provide some detail on what you have now, and what the new setup will look like?]