Steps to reproduce:
1. Open Document with pictures
2. Show context Menu
This is clearly an enhancement, but it would be rather nice to have and should not cause much trouble.
When you got an embedded picture and would like to replace it, you need to remove the old one (loose all settings) and insert the new one. It would be really nice to have an option to "replace" the bitmap data of the image using a single "replace content" option in the context menu of the embedded image which simply loads its data from a new file.
Platform (if different from the browser):
Browser: Mozilla/5.0 (Ubuntu; X11; Linux x86_64; rv:9.0.1) Gecko/20100101 Firefox/9.0.1
Seems like this has been implemented in the meantime.
You can click on inserted images and click " replace image"