So that's probably why the slides lost their reference to the correct slide masters. With my last try I effectively replaced the existing slide masters, but technically it was a copy and remove operation. Result: Again, all slides changed their layouts to the corresponding layout of the first slide master (in the list of all slide masters) instead of keeping their slide master with the same name. I copied all new slide masters from the template into the old presentation and then removed all old slide masters from it.
Result: All slides changed their layouts to the corresponding layout of the first slide master (in the list of all slide masters) instead of keeping their slide master with the same name. I then copied all slides from my old presentation into that new presentation. Select the graphic on the slide, and edit or delete it as required. This will open the master layout of your presentation. I created a new presentation from the new template. To rename a slide master or a layout, select it in the left panel, go to the Slide Master tab on the ribbon, and click Rename. To edit the background graphics in PowerPoint, first select the slide in the Normal View.
Now I need to update my existing presentations that still use an older version of that template. My company offers a PowerPoint template for business presentations that contains multiple slide masters (with multiple layouts).
