I have configured a custom view for the Product Structure table on the Structure tab of a Manufacturer Part in Windchill 9.1 located inside of a Product. This view includes soft-attributes on the Manufacturer Part and the describing Drawing (soft-type) Documents. The BOM view of parts show the configured soft-attributes on the part objects, but with the describing documents shown, the columns that apply to the only to the Drawings are displaying blank. I can confirm that the documents are the correct type and have values populated for these attributes using the details page.
The question is does the structure view support asymetric attribute requests for multiple object types in the same view (the Structure tree)? We are slowly migrating from 9.1 to 10.x and I thought I may have read that there is increased support for querying a set of attributes that only apply to subsets of the objects, but that could have just been for the API layer. I know that the same custom view will work in 10.2 (I tried it out), but we have a customer that was promised that we would try to resolve the issue before we migrate (ugh).