so if something is basin say my arty and i got a ordinace next the arty not being based by anyhting do i gotta roll to pikc up or can i not pick up?

you have to roll for the breakaway regardless

Good question. I would also like to know.

"a unit in base contact with an opposing unit cannot board a transport" -page 29 of the updated ROW

you must successfully break your arty first before you can board it in a transport. so that would be 2 orders for you.