Without the bump node connected to the Velvet shader, then the baked texture image looks correct (in example given, nice bluish velvety colours etc)Bump should be (and will be) baked in a separate map file. Does it happen without bump too ?
With the bump node connected to the velvet shader, then the baked texture image looks almost black.
I don’t have this issue with bump connected to other shaders, such as the Disney shader.
Are you saying that bump shouldn’t be connected to shaders for baking?
If bump is added after the colour is baked, how can it be set up to effect a baked texture connected to an emission shader (in Cycles)?
(or have I miss-understood? )
edit; here's the file in case it can be of help: https://1drv.ms/u/s!AhdwgLaw01tLpwJcl4e ... y?e=3docEG