This is also what I assumed when working on the project in two places - that all the necessary files are ready for immediate work on the project. But it's not like that. I have several folders with files because I work with film material from several cameras. After starting Vegas, the program continually rebuilds SKF audio for the video of one of the cameras, even though they are in its folder. as usual, the tech support from wVegas developers is in a mess - they registered my request, but for a week with no answer, it always ends with a collision with an iceberg. It's a pity - you can improve Vegas together. Are you also facing such a lack of dialogue from Vegas? Am I asking really too difficult questions in the era of moon and mars exploration?

My experience is that the sfk are only rebuilt if Vegas identifies a change?

Thank you Eric, what's the change? The files are the same all the time, the disk is the same, the project is the same - only a server with files connected to another computer. With the computer at home, the project opens immediately. In my office computer, I have to wait 15-25 minutes for the project to be drafted by SFK. What could it be?

I tend to agree with @Piotr-Diszer with rebuilding peaks. After getting VP19, I opened a VP18 .veg project to see how it would go in 19. It took ages for the project to open because VP19 rebuilt the entire (and lengthy) project's peaks even though everything being opened was in the very same project folders as used in VP18 with already existing SFK files. The project was not saved in VP19, but when subsequently opening the very same .veg project back in VP18, the peaks were built yet again.

In my experience, it's long been an issue that Vegas Pro (over many versions) that VP occasionally and randomly decides its necessary to rebuild peaks even though everything was fine when the project was last opened maybe only hours beforehand. Why it does that is inexplicable.

I just opened old project created on a different computer in VP 12 and then 15 and it never said building peaks once the project was opened. It did take a minute to open the project - is it building peaks then? There is no message to that effect.

is it building peaks then?

@RogerS Have a look at the date/time of the sfk files creation and that should tell you.

... is it building peaks then?

The way that I've seen that peaks are being built is in the progress bar in the bottom LH corner of VP - after loading the project, it then goes through a progress advice of "xx% of [event name]" for each event.

Why didn't I think of that Eric : ) Okay, looking at the folder the newest .sfk is from 2017. My experience is the same as Dexcon- once the project is open it goes through and rebuilds them a file at a time.

So in 4 separate old projects created in VP 12, 15 and 17, where all the media and sfk files were stored together, VP 19 did not rebuild any peaks.

The mystery deepens.

In my opinion, the date of the SFK files should be the project creation date, not its subsequent modification. After all, the date does not make sense, the decision of the Vegas program to associate SFK files with a video file should be made according to the access path excluding the date. And the Vegas user shouldn't worry about it at all - it should be a slot machine. vegas overwrites SFk files or saves them in some sfoim temporary folder? why such a complication - once the SFK was created, the access path and END OF THE SUBJECT. It should work but not.

That's how it appears to work here using external hard drives- created once when the media is first added to timeline and then stored with the media.

Is something different about network drives? Do your locally-stored SFK files also get rebuilt when you open a project? Did you rename the video files?