yes, that's what our school internatial office told me. They will keep H1 valid as long as I still work there, whether I use AP or not. When I ask how about I use EAD for second job, they recommend me to use EAD for all positions. However, if I485 is denied, they can still re-instate H1. Not sure how it will work this way.
One thing for sure, AP will NOT invalid your H1 if you still work for same employer.
One thing for sure, AP will NOT invalid your H1 if you still work for same employer.