Merge Question

[TheLumpia]

this is the first time i have used the forums and i cant find one for merging so ill ask it here since it has been a few days since i made a support ticket but i havent gotten a reply, i assume they are getting a lot with so many people bricking their accounts, and since its a few days from Christmas. but i hope someone may know the answer. after you merge accounts, how does the "days logged in" work, do they combine, or do i have to go back though all the login rewards. because i want to make my pc the primary that i have played for the two years, but i have an account since warframe launched on ps4 that has way more days logged in. but if they dont combine and i make my ps4 the primary account, can i still play that account on the pc or is it then locked to only ps4. and when they merge, do i get all the xp from weapons and warframes for my MR rank, or do i just get the items without it increasing my MR.