A family of Microsoft presentation graphics products that offer tools for creating presentations and adding graphic effects like multimedia objects and special effects with text.
Using Insert>Slide from>Other Presentation usually superimposes the present template on the slides you are importing.
Instead, open the presentation from which you want to import the slides, copy and paste them, then click on the down-pointing arrowhead to the right of the Paste button:
It's also possible, after pasting, to click on the clipboard icon in the lower corner of the left-hand slide list, though some users have more trouble getting this to appear:
When you're pasting separate objects rather than whole slide, look for the small pasteboard icon that appears in the lower right of the pasted object and choose Keep Source Formatting: