I created a multi cam sequence in Pr about a week ago. I saw the opportunity to download beta so I did. I imported my old project into it and began adding my additional content to the multi cam sequence that I had created in the non beta. I inserted my presenter cut and moved a multi cam sequence in directly after it. Now the audio is there but the video is blank. I saved and reopend hoping it was a glitch that would self rectify. Nope... good thing that it made me make a copy of the original to begin the editing process and I'm only 2 of 7 inserts into this. My multi cam sequence is gone and I'm closing this and going back because I'm on a school deadline..
If you cannot handle the most versitle word in the english language used just once, then you shouldn't be coding software for anyone. EVER!