CC classic + LR Enfuse, brackets disappearing

Weird phenomenon.

I group my exposures in to staks per shot, so 7 brackets during the shoot equals one stack of 7 images. Yesterday evening I started a batch enfuse of about 30 stacks with 7 or 5 brackets.

This morning I found that the stacks changed to 2 images (where it would normaly be 7 brackets + 1 efused = 8). Those images being the efused one and the top image of the pre enfused stacks.

I kind of lost it because the other exposures where nowhere to be found in the catalog. When I tried to import them again the import dialogue stated that the images are already in the catalog... Filters off and everything, images where nowhere to be found.

As a last resort I deleted the enfused images and boom suddenly the stacks where complete again. Up to 7 or 5 images per stack.

Now this is not the way It should behave and with the previous version of LR it didn't. Is this a problem with the plugin or with LR?

In my workflow I need to be able to use the other images beside the enfused one so this kind of puts me in a tight spot.