Playmemories Doesn't delete from A6300

[LochNessMe]

I'm running Playmemories under Windows10 (6.0.00.12211) and have an A6300

On Playmemories under tools>>settings>>import  I have both "Turn off the camera after import" and "Delete imported media files from the device" selected. 

I trigger my photo download via wifi using the "send to computer" option,  after my photos have downloaded the camera switches off, but the photos never get deleted.

Can anyone help me fix this please?