BMA supports WAS 8.5.5 and Portal 8 individually per documentation but doesn't support the combination of Portal 8 (WCM enabled) and WAS 8.5.5. The WAS snapshots fail with a transform exceptions. I would like to see this supported asap.
Also the option to configure portal in BMA is disabled as well. This needs to be enabled so both WAS and Portal snapshots and associated tokenization works in BMA