Upgrading 4.5 to 6i -- Losing referenced objects

We are trying to upgrade from forms 4.5 to 6i on NT. We have a "library" form that contains all of our visual attributes, default headings, etc rolled up into an object group. This form converts fine, but when I try to convert any forms that reference this form I'm losing my attributes. I get no error messages. I can see the object group, but no visual attributes show up under the visual attribute node. All the visual properties for the items, canvases, etc. are shown as .

I tried this same process via Client/Server and had no problems. Everything worked and ran beautifully. What should i do guys?
Sonu Saxena