The same that for pro... notepad !!!
Notepad will allow you to copy and past hardpoint, bounding value, and more from one mesh to the other ( the .mesh need to be in txt mode )... same thing for the particle file, i have never try to learn use the sins tool for it... only notepad for create/edit the particle file...
Well, it is how i like to work... it have already happen that i correct model from other directly by editing the .obj in the notepad too...
Best is to seek a little on these forum... someone have made plug-in for xsi mod tool who ease the hardpointing ( http://soase.weebly.com/xsi-add-ons.html ), someone other have made a easy tool for convert from bin to txt and reverse ( harpo tool ), a other one have made eclipse tool ( http://code.google.com/p/soaseplugin/ ), a other a full wiki related to modding ( http://soase.weebly.com/index.html ), etc...
There is some topic who are worthy to be put in your browser Favorites... by example : https://forums.sinsofasolarempire.com/363233 or https://forums.sinsofasolarempire.com/366795