Revoking individual TS client licenses

We have a W2K Terminal server hosting several companies with about a dozen remote TS clients. We have since split the companies into 2 independent networks each with its own W2k Terminal Server. The number of remote TS clients is increasing and many who were connecting to the original TS is now connecting to the new TS. My question is, how do you move or revoke the TS licenses from one TS to the other? I see on the TS Licensing program that my new users are close to the 90 day temporary license expiration date, and the ones with permanent licenses do not need them. Thanks in advance