I am animating a rigged digital asset using animation layers which works great until it doesn't… Pre render I can scroll through the animation and everything works as expected. During render, the hda loses it's link to the animation layers after anywhere from 45 to 60 frames in. As seen in the attached image, all the parameters after the link is lost are highlighted in orange. If I cut and paste the hda, it will relink the animation, but it constantly drops the link when I work.

Thanks in advance,

Sean

Is this something that you can reproduce easily in another hip file? If yes then you should send this as a bug report to SideFX. They are usually quite fast with fixing these kinds of issues.