Collections created by Avalanche not synching

I converted my Apple Photos library on my Mac to LRc using the Avalanche program.  All Apple folders became collection sets and all albums in those folders became collections.  When I synch one of these collections to the cloud, an album by the same name is created but it has no pictures in it.  When I create a new collection - even in the same collection set - it synchs just fine.  Album and pics show up as expected.  What's wrong?