@igor.sokolov which other applications exhibit this problem?
GlobalId may be the same for semantically different projects
From my understanding, this should not happen, and vendors should not design software in a way that makes this occur.
GlobalId may be different for 2 IFC files created from one design.
From my understanding, this is not an issue: this is the desired behaviour to denote that two IFC files actually refer to the same data. When IFC 5 comes with IFC referencing, that’ll clean this up further, but for now, GUID matching is all we’ve got.
Edit: crossed out my statements - I had misread Igor’s message 
Thanks @tauscher!