Just pull everything back to your alts. The only reasons why you wouldn't want to is if you plan to do more than 1 pull, can't do the pull and bring everything back with your character for whatever reason, be it class, lag, or instance layout, or you're having your alts help. in RFC and SM Cath/Arm I don't move the alts further in at all, when I did WC (a while ago) I did 2 pulls before resetting so I had to move them in a bit, and in strat I actually had my alts helping, although that was a long time ago at 70 and I probably won't do that next time.

If you find it easier to move your alts in then do it, but personally I find it easier to leave them behind whenever I can.