I have since moved the files to our office's shared file server. Now if I make a change to the SU model, it doesn't update the references in LO any more.
I did right-click and try "edit in SU" option, and it opened a different file to the one it should be referencing. The filename was a string of numbers and dashes that did contain the original SU model name. I tried to saveas and overwrite the original filename, but still doesn't behave itself.
Is there a way to force which file is referenced? I'm reluctant to have to re-insert the SU model because I've got quite a lot of notes and lines around the details in LO and afraid they'll all go haywire

