Hello Josh,
Hope you are doing well.
I did not find any way to achieve this. The purpose of the save and export is to make it easier and faster to implement on applications. However, if you are loosing functions that you have developed on your application. I would recommend two different routes:
1. Consider separating your custom code to another file, so when you export and save the APP Main task can be replaced without any worries.
2. The other option is instead of exporting, just copy the new code that you need directly from the source folder. This may be more tedious, but it depends on how complex your application may already be.
Best Regards,
Sabina
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