Our previous work considers a method for building a numeric utility function out of qualitative ceteris paribus preferences, or preferences other things held equal. Dynamic domains embody changes in preferences. This can come in many forms. The preferences themselves may change, the variables over which references are expressed may change, or the forms of utility independence that hold in the domain may change. We consider the consequences for each type of change to our system, and conclude that inherent ambiguities in our representation allow for simpler handling of change than might otherwise be the case.