I've found sollution.
For the first in SE Standard Parts Administrator parts should have status "CREATED")
For the second - STD part files have must not be read only.
I've used the Barham Software Property Remapper tool successfully many times. Once you figure out the form for the .dat file it's pretty powerful.
Also, queries aren't limited to properties. For standard parts I would use the "name" search and a wildcard of *ANSI*. Any string that's unique to the parts will do.
Edit: I should say you don't require making any custom properties. Name is a property but it should be enough.