Removing embedded audio, fast save, and file size

[RP]

I originally had 'Fast Save' turned on. I switched Fast Save to turn
off (as recommended in this news group)
However it appears that all my previously created powerpoint files are
behaving as if Fast Save is turned on; and all powerpoint files after
wards are behaving as if Fast Save is off.
(And the opposite is true. If I created a PPT file when Fast Save was
off; then turn on Fast Save; that file behaves as if Fast Save was
off)

Is there any way I can get the previously created Powerpoint files to
shed its original 'Fast Save'-ness?

1. Fast Save turned on
2. Created document, added embedded audio (of size 1.35mb).
3. Saved document; checked file size (1.85mb)
4. Fast Save turned off
5. Removed embedded audio (tried both deleting just the audio, and
deleting all slides)
6. Tried both Save & Save-As. File Size remains 1.85mb

7. Created a new ppt file; added embedded audio (of size 1.35mb)
8. Save document (file size = 1.85mb)
9. Removed embedded audio
10. File size reduced to 400k
11. (Turned Fast Save On)
12. Added embedded audio; save (file size = 1.85mb)
13. Removed embedded audio; save (file size = 400k)

So it appears the files are behaving under the Fast Save mode at the
time the file was created. Not using the current Fast Save settings.

What I'd like to do is programatically (c#/.net) when I do a
presentation.saveas(..) have it save behaving as if Fast Save is
turned off. Does anyone know how to do this?
And if not, does anyone know how to manually adjust the file so it
sheds its original fast-save-ness?

 

[Steve Rindsberg]

Files don't have a fast-saved property, but if you've worked on them with PPT's
fast saves enabled, they'll grow.

They won't shrink until you turn Fast Saves off in PPT and then open and resave
the file.

What you describe below is probably due to this: when fast saves is on, PPT
won't keep appending changes to a file indefinitely. When the "fast save"
baggage reaches some percentage of the original file's size, PPT in effect
turns fast saves off and does a full save for that one file.

It does NOT maintain state data for the file itself.

Turn Fast Saves off. Leave it off. Don't worry, be happy, save your sanity
for the important things.