I tested steps 1-8 in two ways for step 6:
1) I moved different files from the one opened into /foo/bar;
2) I moved the previously opened file from /foo into /foo/bar and opened it again in Gimp.
Finally, I edited both instances of the same file and saved them.
Gimp did not crash and editing/saving (under the same name in different folders) worked.
Works for me in Hardy.
I tested steps 1-8 in two ways for step 6:
1) I moved different files from the one opened into /foo/bar;
2) I moved the previously opened file from /foo into /foo/bar and opened it again in Gimp.
Finally, I edited both instances of the same file and saved them.
Gimp did not crash and editing/saving (under the same name in different folders) worked.
:-)