EB1C Query

[anuragsri]

I am in employment based green card.

My PD : March 2018
GC Type : EB1C
I-140 : Approved
AOS interview completed
Home Country : India.
Current Work Authorization: L1 Visa validity Dec 2020, B1 Visa valid to till Mar 2021

I have applied for AP and EAD and may get approval after 5 month.

I need to go home country for 1+ year due to personal reason hence i have below questions

1. Will my I-485 reject if i am not in US?
2. How can i comeback in US?