If I understand correctly....

No, do not discard the old growths unless they are dead and brown or have problems.

I keep the new and old growths in the same pot until they outgrow the pot or I need to change media, that is what is called letting a plant get to specimen size. When I do split a paph, I'll split the plant so that it has at least couple of active growths per new pot.

I would think removing and re-potting each new growth, could be fairly harmful to the overall health of the plant.

Good luck,

Bob

Ok, thanks, Bob.

Bob is right, those older bulbs store food for the new ones that are going to bloom. The more older bulbs you have, the more new ones it will make, and the more blooms you will have.