Hi JerryBumgarner1,
As per your description, please don’t worry we can work together to narrow down and resolve the situation.
It seems your above mentioned JSON code work in SharePoint online list but when you try to change "txtContent" from "New Special Order" to "New Order" and the code is not saved in your list. May I know if my understand is correct? If yes, based on my test result it seems I cannot meet the same issue as like you described above (After save the JSON code and it doesn’t revert back to original code).

To narrow down your issue, could you please confirm does this issue only occur to specific SharePoint online list. If you don’t mind, could you please try this JSON code into another SharePoint online list and check if there is any different, it will help for us to narrow down your issue whether issue related with specific list or JSON code.
In the meanwhile, if you don't mind could you please upload a screenshot for our reference so we can understand your exact situation and provide our suggestion in a productive manner, perhaps some related screenshots will be helpful.
I appreciate your understanding and stay safe!!
Best regards
Waqas Muhammad