Multiple edits are required, right up to the point of presentation. If
PowerPoint has a problem with a sister program's files, then perhaps MS
needs
to revisit how such files are handled. I would expect a Visio file to
perform
flawlessly in PowerPoint.
I did not want to say, that PowerPoint regularly has problems with sister
programs. I myself have used Visio files in PowerPoint, and they indeed
worked flawlessly. I just wanted to offer a workaround to handle the
presentation as long as we did not find the reason. And a reason I cannot
think of, in the moment.
If we do not find a solution here, it might be helpful to post your question
to the Visio newsgroup, too. And tell them what we excluded as a reason.
Best regards,
Ute