InDesign handling of masks and paths

[BobRoosth]

This post could also be under Print Design....

I am working on a catalog in ID CS3. The images are largely TIFFs (because this job was done in Corel Draw, which does not really understand PSDs) with clipping paths used to remove the background. In most cases the path was used to make a selection mask.

When I place these in ID, the mask is used to create transparency. It appears that ID is taking the mask and converting it into a path that can be further manipulated in ID. Why does ID not use the original path in the file?

In one image, the re-created path is wrong. Path lines that should be straight have large curves that cut into the image.

Has anyone seen this behavior?

Before posting this, I did some testing: If I save the file as PSD and choose the image mask, the placement yields what I want, WITHOUT the ID-created path. I don't see a way to get ID to use the path from Photoshop at all.

Is my most reliable option to re-save all these images as PSDs?