I don't have access to any of the interlaced MyArt images, they are on diskettes and I have no disk drive on my Geneve or TI-99.
If it by any chance can be helpful I have attached a GIF-file G7 interlaced, it is viewed correct with PictureTransfer.
I know I viewed an interlaced MyArt image of a tiger on an earlier version of PictureTransfer back in 1998, so I guess the newer version should be working too.
Sadly, I have no more information about PictureTransfer, maybe @9640News have?
COLIBRI_I