You could extract the CONTENT.XML and there you check the images’ paths. This can be absolute or relative. Writer displays absolute paths even it is customized to use relative ones! So examine the CONTENT.XML (search some images and check the path).
Once the syntax of the paths is clear, you can proceed with
SEARCH
- C:\buffer\Mendelsohn (or similar! Writer can use slashes instead of backslashes etc.)
REPLACE
- C:\Mendelsohn (or similar!)
(Use Notepad++ or a similar editor for this operation.)
Example for relative path in Writer’s CONTENT.XML
href="../SO52photos/apples.jpg"
Steps of proceeding
On Windows you may rename Mendelsohn.odt to Mendelsohn.zip. Then extract the CONTENT.XML (and delete the remaining one in the container resp. ZIP file). After SEARCH&REPLACE insert the altered CONTENT.XML into the ZIP file, rename it to ODT file.
Be aware to work on a duplicate until your result is as wished.