When converting a 4D app to project mode, there will be an automatically generated JSON file located in the Logs folder describing everything that was changed. When viewing the JSON file, there will typically be a long list of warnings and/or errors.

Warnings
These warnings describe specifically which setting was changed or object that was automatically converted to its project mode equivalent during the conversion. For example, one common warning will be that all highlight buttons will be converted to invisible buttons.

Errors
Errors are typically problems from form objects that must be manually altered in order to resolve the issue. For example, a 3D buttons' "Background Offset" style is no longer supported and must be manually changed to a different style.

We recommend addressing all errors listed in the JSON file before fully committing to using the database in a live environment.