The smartest solution would be to go back to the Elements Organizer file and make the revisions there, then re-import the slideshow back into Premiere Elements.
Not all of the transitions and motion paths the Organizer uses in its Create Slideshow tool translate directly in Premiere Elements, which may be why you can't always remove them, even when you break apart the file.
Thanks for the advice, that looks to be the only way round it as I have
not found any of the transitions from Organizer Create Slideshow,
including "None" that PRE can change/remove etc. As far as I can tell
whatever options I select in the Create Slideshow (transition type and
duration and slide duration) seem to be set in concrete as far as PRE is
What was really bugging me though was that PRE was inserting an unwanted
transition between linked slides, i.e. where an additional Pan&Zoom is
added to a still (which BTW is a super effect great for highlighting
multiple details on a photo). If I select all transitions in Organizer
Create Slideshow and change it no problem here, the links are left
alone, however PRE will apply that transition to the link i.e overwrite
it. Workaround is to add any additional Pan/Zooms only AFTER setting a
Interesting Steve, as I would have assumed that Break Apart would have allowed full changes. Learned something new today, and it's barely 10:00AM here!