Nothing is destroyed, this warning is slightly exaggerated. All you have to do is wait for the patch while remaining "freeze" and nothing will be lost, if they manage to deal with multistyles.
Besides, this happens even with non-frozen tracks, just test with all the multistyles.
It's more of a multistyle problem than anything else. See this thread which also discusses multistyles.:

https://www.pgmusic.com/forums/ubbthreads.php?ubb=showflat&Number=788368#Post788368

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bug 2024 Biab Multipistes1.png (354.39 KB, 194 downloads)
bug 2024 Biab Multipistes2.png (304.87 KB, 194 downloads)

Biab Audiophile 2025 11.28 Win