How to Read marshmallow encrypted memory card?
The SD Card will only be read from the device you set it to. 
I believe if you to a hard reset but keep the data where the key is stored intact, you can still use it regularly.
Take a look at this thread:
http://forum.xda-developers.com/moto-e/general/trick-switching-roms-loosing-adopted-sd-t3314647