"Apply PerfectMatch" not available

The option "Batch Tasks -> Apply PerfectMatch" (I hope this is the correct English option, in German, it is Batch-Tasks -> PerfectMatch anwenden) is greyed out on my installations of Studio (from 2019 to 2024), is there any option that I have to activate to make it work?

I have installed another instance of Studio on a different computer and it worked without problems (maybe, I have changed any options in the past years in my main installation). Can anybody help?

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