Keep Test Computers in Test collection.
When testing your different deployment scenarios eg. Task Sequences, you normally create a Test collection, and associate a test PC to that collection. Now ones the PC has successfully carried out the steps in the TS, you might want to change some thing, and then run the TS again. You now find that the test PC does not work any more, and you have to associate the PC all over again. Why does this happen! The PC receives a new GUID during deployment, and therefore, the original associated PC will become obsolete. The PC (obviously still with the same [...]