[Zope] Dumb object aliasing question

If I add a new image, call it img1 and view it outside of manage, all is well. If I replace that image and view it. It hasn't changed ?? If I view it in manage it's the new image. Restarting Zope doesn't help. If I now change this image in manage a second time it won't change. But it's size changed, just not the image. I picked up the CVS version deleted Data.fs and started over, with the same results. Shouldn't I be able to change an image ? Any idea where the code is that decides to render one way for local manage and another way for the remote user ? I'll find it eventually ....gurrr --Darrell