Wtm. Hamyl’s glory divide/repot, best option?

[Yourneedfulthings]

My Wtm. Hamlyn’s glory needs repotting. It is climbing on itself with roots covering some leaves. Photos included.
Clay pot with Leca beads has done well. I am contemplating cutting a section or two and place them all in one larger pot or in woodbasket.
My question:does the remaining older plant base will regenerate and start growing new shoots or is pretty much done growing and I should concentrate on the new cuttings and discard old?

Since plant is a climber in shape and suggestions on how they do best long term. This one was repotted 2 yrs. ago.
If left as is? Any problem with that?