He was asking about the two bath variant which is reused without replenishment.
In any case, replenishment can have other benefits to the image as well.
Anyway, in regards to replenishment, there's article here on unblinkingeye about Divided D-23
It's just D-23 with an alkaline after bath. So I'd start with either the standard replenishment rate (but I'd think youd use more chemistry replenishing then using it straight, tossing and remxing @ 20 rolls/L), or divide the replenishment rate down into normal usage capacity over divided usage capacity.
But it does seem slightly pointless.