It appears that any categories that are added inside the infobox-tag aren't processed. E.g. w:c:tes:Gwilandor is not added to w:c:tes:category:Online:_Image_Needed while there is no image present in the infobox itself. There are parser functions inside table cells that check for missing information and add categories based on this missing information. Does this indicate that parser functions are not yet supported?
Would it work when those parser functions are replaced with Lua equivalents? For now I think a possible workaround would be moving some of the parser functions and category assignments outside the template, but this is no option for some other templates that are on the todo-list for transformation such as w:c:tes:Template:DragonShouts.