Customization of P25Gateway - Overwritten

[N6MIK]

Not sure if this should go here or in General, but here we go:
In the [Network] section of P25 Gateway, any Net and RF Hangtime values I set will get reset to 0 and any custom lines (such as static TGs) will be deleted almost any time other config changes in the UI are made. I can set all of these back up, and in no more than a day, they're gone. How can I stop this from happening?
Thank you!