Official response below from SCS in response to my report on all text elements reverting to orig preset values during undo operation as discussed here. Take care with text elements. Save your work frequently in 9.0a !!
Serious Bug in 9.0a
Our development team has identified this functionality as a bug in the Vegas Pro 9.0a software. We anticiapte a fix in an upcoming build of the Vegas Pro 9.0 software. I do not have any release details at this time. You can use Net Notify to stay up to date on product releases. Go to Options > Preferences and check the box that says "Use Net Notify to stay informed about Sony Media Software products". The software will inform you when an update is available.
In the meantime, you may consider rendering out your Text media to it's own video file to avoid the loss of your text elements. Thank you for providing your information.
Serious Bug in 9.0a
Our development team has identified this functionality as a bug in the Vegas Pro 9.0a software. We anticiapte a fix in an upcoming build of the Vegas Pro 9.0 software. I do not have any release details at this time. You can use Net Notify to stay up to date on product releases. Go to Options > Preferences and check the box that says "Use Net Notify to stay informed about Sony Media Software products". The software will inform you when an update is available.
In the meantime, you may consider rendering out your Text media to it's own video file to avoid the loss of your text elements. Thank you for providing your information.