Q1 Answer: When u make a map a portal is auto added to Cap even before exporting, although it is a portal to ur map it still is incomplete without exporting it first. So when u enter it meshs and some things can appear missing, but when u export u will have now 2 portals to ur map, 1 incomplete looking and one properly exported~
Q2 Answer : The presets u are download are only to SEE that persons preset they arent meant to be used, to use a preset u need all the texture and material files of it, and that is ofcourse if they made it avalaible for download.
Q3 Answer: Make sure u replace ur item.cfg with the one u currently have, items need to be coded onto chars, so look for a item.cfg and replace it with urs in FeralHeart Folder
The claws have a instruction manually so i suggest following that, but Tigg explains that they go into ur model folder~
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