edrawings not showing drawing views

Hey Folks

I have an issue whereby I have several SLDDRWs that show everything fine in SW (2015 SP4) but when I have people using eDrawings to view them, generally through EPDM for drawing verification/checking procedures, a load of drawing views disappear. Curiously enough the dimensions and notes associated still show...

Anyone come across this before ?
Even on my own PC, if i open the SLDDRW in SW i can see everything, then open it in eDrawings and I'm missing views.
I have tried checking out/in to create a new version and get the same result

Cheers,
Joe

SolidworksDrawings And Detailing