[Zope] Photo product old -> new

I have lots of Photo objects using the old Photo product (v.0.4). Now I want to start to use the new one (v.1.2.3). Does anybody have a suitable script or something for converting them since the two products don't work together. My current standing solution is to convert the Photos to Images and then reinstall the Photo product and convert from Images to Photos again. Cheers, Peter