Basically, depends on what you're doing.
You can export the entry as a CSV file and then import back on the other editor. But be mindful the entry could've been modified. If it's a new unused entry, for instance a new character, then there shouldn't be any issues.
If you want to you can make character copies, just right click copy and paste somewhere else on Types 21, 22, 23 and 24. You can then disable characters from the sandbox by going to 21 (Char data) and changing the "unlocked by stage" value to 0
Type 19 is for stage data and includes what should spawn, that's useful to know too.
That said, for now you're better off just editing things back. 1.25 seems like the final version for some time. I updated the dev package to 1.25, you can find it here:
You must be registered to see the links
Btw I reorganized and left space for new additions
31-39 tengsten generic female characters
40-45 for modded generic characters
46-49 for cross over characters
50+ for rare encounter characters
It's intuitive