Why was this changed - Or is it a bug?

I notice that now in X1d Expanded, I have a dirty-file situation which I didn't have before...

If I open a file which is marked as clean, then proceed to export a mix (Export Audio File), the song file is now marked as dirty...

Not the worst thing in the world, but it is misleading as nothing in the song has changed....

If anyone can confirm this... Maybe we can get it fixed/changed?

Thanks...
Keni