You need to download the 8.8 packages. I would check it into the evaluation branch, possibly the current, but only if you dont have any client tasks set to deploy VSE from the current branch. In this scenario, it would start deploying VSE 8.8 everywhere, and it sounds like this is what you would like to avoid. I dont believe you have to run the ePO Migration tool for VSE 8.8, but it will basically take your 8.7 policies, and re-create them as VSE 8.8 policies. In the name of not having to re-create all your policies, this will be a big help. If you would rather just create new VSE policies in 8.8, then dont run the Migration. To answer your question, no, it wont hurt your 8.7 machines. Those policies will not change, and their assignments will remain the same.
thank you for your quick response. I have a question:
I presume that you mean the packages VSE880LMLRP1.zip and VSE880Patch1.zip. When i checkin the first one (VSE880LMLRP1.zip) in the master repository it only gives me the option to check it in in the current branch (see screenshot below) any tips?
thx in advance for the support.
Go to your Menu ->Configuration -> Server Settings -> Repository Packages. Make sure you are able to check-in for any repository branch.