What id is FAST returning with a search

Hi,

We have a EPMDocument that we can't rename because the new name does exists. We do although do not find this document back in Windchill. If I search with FAST I do get a match but the EPMDocument reference does seems odd (see bitmap). This number (31061) does not look to be an obid number, how can I find back the obid number from this given number ?

Regards,

Bernard