TIFs in Layout Viewport shifted not in Model

[Spokes]

We have a civil project with two TIF images that edge match as a background. In the Model the images look just fine and the images match with survey data. In one of the Layouts there is a plan view defined by a Viewport and the two TIF images are no longer edge matched, one is displayed shifted. This has not always been the case, we have PDF plan sheets from this Layout that show both TIF images as they should be edge matched. Is there still a Raster Design bug out there that needs attention? We have run Recover on this file, as well as an Audit, and -Purge R, nothing changes the condition. Any help would be appreciated.

Thanks,
Mark

[Jmurphy]

Irregular shape vports was know for doing this, what does the plot preview or plot look like?

[Spokes]

The layout consists of to rectangular viewports that make up a plan sheet for a road project. When a plot is previewed the shift can be seen in the edge matched TIF images, and when it is plotted the shift is there. When the plan sheet was originally designed the TIF images were fine and it had been printed without this problem. Is there a fix?

[rkmcswain]

Does the amount of "shift" vary depending on the zoom level of the viewport (viewport scale)?