Currently I get most if not all my raid only gear from the pit(sim):

MK 5 CEC fusion furnace salvage
MK 6 Nubian design tech salvage
MK 6 merr-son thermal detonators
ML 6 CEC fusion furnace salvage
MK 7 nubian security scanners

Question:
With the new changes to raid and new raid incoming where am I gonna get these raid only gear?
If I understand correctly you can only summon 1(one) raid @ a time.
For arguments sake, lets assume I need 500 mk5 cec furnace salvage for SLKR event and I only have 220
The guild i'm in only summon the new raid.
Will I get the pit plus sith triumphant gear plus new raid gear.
or do I have to quit guild go to beginner guild and participate in the pit to get the pit only gear i need for example mk5 cec fusion furnace salvage until I have enough and then return to previous guild?
Thank you in advance