Sadly it does not work.
No mater what I try, UABE still reverts the MonoBehaviours to 0x72. The most successful approach so far is to enter the file type UABE shows (0xfffffff8 in my case). At least UABE then creates a file that is shown as "0xFFFFFFF8 (MonoBehaviour)". Yet viewing the data of this file shows that it is a standard 0x72 type and importing dumps/raws of the 0xFFFFFFF8 type doesn't change that anymore.