Maya doesn't seem to be reporting cached Bifröst data to the _get_caches function (the files do not show up in the assets list automatically).
For the scene in which this was observed, the following conditional from assets.py _get_caches() ~ln514 always evaluates to true and the "continue" was executed for all 5 bifrost container files, preventing the files being added as an asset:
if not maya.get_attr(container + ".enableDiskCache"):
continue
Maya doesn't seem to be reporting cached Bifröst data to the _get_caches function (the files do not show up in the assets list automatically).
For the scene in which this was observed, the following conditional from assets.py _get_caches() ~ln514 always evaluates to true and the "continue" was executed for all 5 bifrost container files, preventing the files being added as an asset: