hi, i believe this is a bug, i will put an issue in if so.
when i do an export of extensions from bulk handler 188.8.131.52 (FreePBX 184.108.40.206) i see in the export the following duplicate colums
Column - Name
ay - mediaencryptionoptimistic
bq - mediaencryptionoptimistic’
I think bq is a bug and the culumn has no data
let me know what you think