Hi Chris,
thanks for your post! some answers:
1) Hopefully not, if so it would be a bug.. but you should always make backups anyhow..
2) Generally not, if so we will mention this in the snapshot release notes
Often a snapshot introduces new settings, teststeps, etc.. these will of course add info to the project file when used.. but should not prevent the current production release to read the project file as well (ignoring the new options..)
Anyhow, we will post this kind of info when applicable to a snapshot in its announcement..
kind regards,
/Ole
eviware.com