I've installed the extensions so that 8.7 appears in the policies list, but I have a question on the ePOpolicymigration tool. It says it upgrades the 8.5 policies to 8.7. I don't plan on pushing 8.7 all at once, may wait a few weeks. Will my 8.5 policies still be intact? I am running ePO 4.0 and 8.5 on all machines currently.