After updating the Logic Pro to 10.5, I opened an old project of mine and this popped up...

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What is this "new format"?


How is it different from the older one?

P.S : The project opened and worked just fine. Aside from the visual differences, I couldn't find any changes.


There has been some major changes in automation in Logic Pro 10.5.

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Apple will not divulge any internal changes/optimisation they've made but this major a change can be attributed to the "new format" and hence answers the reason behind the warning.

Source : Logic Pro X 10.5 release notes

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