bitmaps losing Merge Mode when switching between Enhanced and Wireframe Views

is any one else having this happen?

i have bitmaps (admittedly imported photoshop files, not Corel Paint) that the merge mode is set to 'Multiply'.

if i switch to wireframe mode and do some work, when i return to 'enhanced' the bitmaps have lost the multiply setting and revert to 'Normal'

this even happens on layers that are locked.

i have never had this happen with previous versions.

thanks, -handsome john