One more hint to using replicants in general, and esp. when developing one: Replicants find their mother application via its app signature. If you happen to have several executables with that app sig lying around, maybe from the productive app and several different states of debugging for the new release, it’s only by luck your replicant picks the version you want it to…
So, better make sure there’s only one executable with that signature around, maybe by using a special “development” sig.