Android writing to Enterprise Partition from code

I need to persist some data past an enterprise reset on a TC75X, and it seems the way to do this is to use the enterprise partition. I can create a folder inside /enterprise/usr for example in the format /enterprise/usr/com.company.app BUT I cannot read or write inside that folder.

Feels like I'm missing something obvious or misunderstanding the use of the partition.

Any guidance would be appreciated.