I have a hunch that that if you tick off jBridge in VST Configuration, then do a VST rescan, that will do a sort of 'batch enable.'
Trouble is, jBridge will be enabled on all plugins, i.e. even where it is not needed, like on 64 bit VSTs. But if there's only a few of those, maybe it's worth it.
Regards
Glenn
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"The path of excess leads also to the palace of wisdom," but they let you in through the back door.