Just one FIeld not mapped in integration with mongodb

I have a field ‘acceptedAt’ in collection ‘users-challenges’ in MongoDB, but just this field not showing in my Dremio, all others field is showing.

Fields from users-challenges collection:


Field that isn’t showing:

image


One field that is showing correctly:

image

@lucasft What type of column is that? or does it only appear in a few documents?