OPEN CLOSE HI HATS ON FILLS NOT WORKING

Ive edited / added open close hi hat after copying the main drum beat to make it a fill so when I hit the main pedal it just ads hi hat to the main pattern as a fill which its a nice simple effect.I dont use the accent switch on my external switch as I use it for pause.
Anyways the hi hat open close is there in my song on the BB Manager and I hear it fine on playback through computer but when I export it to pedal there’s no open close hi hat to be heard on my edited fills,its weird.Have you got any ideas what it may be.Ive tried putting the SD card straight into the computer and exporting that way but its still not working…heeellllp!!!