Is there any way to replace an image and keep scale and position?
The 'edit image' button is one route, but I have a long technical document where I can't do that.
(As a power user of QuarkXPress I'm sure that could do it but I've not used it for 25 years!)
sadly no
https://bugs.scribus.net/view.php?id=5542
... it's aging well...
and, sadly, i don't have the revised version of the patch anymore:
https://bugs.scribus.net/view.php?id=12253
... but it would probably not easily apply, after all those years.
anyway, without a comment from the team, stating in what direction the patch should go (and if they want the feature) i will not further work on that.