I have a visio 2007 document with multiple tabs. Each tab contains a process
flow and description of a different process. Each tab has 3 swimlanes and a
fill on the swimlane titles and the first swimlane. The document contains
hyperlinks to other tabs.

Everything was fine until a few days ago I created a pdf version. I
selected File, Publish as pdf or xps, in order to attach it to an email and
send to people without visio viewer. The next day upon opening the visio
document, many of the flows on many of the tabs were "corrupted." The data
and flows became jumbled together randomly and I'm unable to correct it. The
top swim lane has the process flow, the next two swim lanes are text boxes
for annotations. Now the data in the 3 swim lanes are jumbled together with
the flow and the text boxes and the fill in random areas and is a complete
mess. When I try to move the text boxes, it does not behave properly. The
box either won't move or often moves to another location and then I can't
move it anywhere else. This "mess" did not occur to all the tabs - out of 15
tabs with swimlanes, this occurred on 8. The other 7 the text boxes were
only slightly misaligned and I was able to fix them. What in the world
happened? More importantly, how do i fix it? I'd be happy to include the
visio document, but don't see a way to attach documents.
Thanks!