as i can see :
when i do my own autocor, they are stored in my profile in this way : a file is
copied from "program files" to my profile and the autocor are added to it. Then
the file in program file is no longer used.
So if an update of the autocor file, is added to program files (by an update of
openoffice for exemple) this one will be ignored if i have autocor in my profile.

Why do not store only my autocor in my profile ?
at the start of openoffice, an autocor file could be built, by merging the two
files and storing it in local settings

ps (my english is so bad that i hpe someone will understand me)