It all depends how stable the line is, does not matter if it is reg or fem. Just make sure they are stable genetics to begin with and use a good reversal spray. When a reversal is done improperly or you're using something outdated like colloidal silver you can pass along stress traits like hermaphroditism. Do your research and then use a stable line and you should be fine.
To answer your second I would not pollinate the same plant you reversed for the pollen. If you are looking to create an S1 I would pollinate a different plant that is the same cut of that strain.
To answer your second I would not pollinate the same plant you reversed for the pollen. If you are looking to create an S1 I would pollinate a different plant that is the same cut of that strain.