If you don't have any project/website inside your x5 program (old versions) that might going to use them, then go ahead and uninstall them, they have nothing to do with 10 and 11 version.

you can always make fresh copy of your project files and save them, then again when you install the program you would be able to import them.

if this post is the correct answer, please mark this answer as correct answer.

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Good Luck
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