EB1C - Query

[renaultR28]

Hi,

I filed for my GC in EB1C in March this year. I got my EAD in June and 140 approved two weeks back. 485 approval is still pending:

1. Will I be able to change jobs immediately after I get my GC (in EB1C) or should I wait for a specific time frame to make the job change

2. If I make an immediate job change how will USCIS know and where will I be questioned - will that be in the Port of entry if I go out of the US and come back.

3. Can I go to my home country after getting my GC and come back after few months without my GC being jeopardized just in case my company asks me to go back to offshore.

Thanks.