Libre Impress Transitions disappearing


I am working a presentation and when I add slide transitions and save it works fine but when I close out and come back only certain ones are there. I am saving in PPTX if that matters. I have the latest version.

Please help.

Thank you

Powerpoint and Impress are different, if you want to show using pptx I recommend using Powerpoint to create the slideshow.

If you use Impress to create a slideshow, save in ods format and show using LO, even if you have to use a portable version of LO.

I find starting to create a slideshow in one program and finishing in the other makes some peculiar ssues