there is a ppt file, which is saved on libreoffice 5.4.x as ms powerpoint 97-2003.
I used to change the background image via “set background image” command in context menu and “apply to all slide”.
Libreoffice 6.x doesn’t have the command in context menu. So to do the same thing, I have to remove all background images on all slides and set the background image on the master slide.
I know, on the purpose, using master slide is right. But I didn’t use master slide before and I have many presentation files. Is there any good solution to fix this?
example file : https://goo.gl/RkNFz1