[PS3] Mass Effect 3 in the Trilogy Edition

I have played Mass Effect 3's multiplayer on my Region 2 game (my country's region). I wanted to buy the Trilogy edition but couldnt find it in my country so the only way to get it is by buying it from amazon (region 1) because i have another PSN account for region 1 DLCs/codes. So if i bought it will my multiplayer progress load, knowing that i have my main region 2 account synced to EA and BSN.

Note: I have ME2 and ME3 but i wanted to get the full pack with the best packaging, being in the US.