Is there a way to do what I want?

[Ondrashek06]

Switch 1 - v2 Mariko, not homebrewed.
Switch 2 - v1 Erista, homebrewed with Atmosphere and Emu/SysMMC. Unbanned, capability to connect to nintendo.net on SysMMC.

What I essentially want to do is splitting an ACNH save file on Switch 1 to the same save on Switch 1 AND Switch 2's EmuMMC.

The way that I've considered would be like this:
- Install the ACNH transfer tool on both Switch 1 and Switch 2's SysMMC.
- Use it to transfer my savefile from Switch 1 to Switch 2's SysMMC.
- Somehow copy the savefile to Switch 2's EmuMMC.
- Use the tool again to transfer the file from Switch 2's SysMMC back to Switch 1.

Would there be any restrictions to prevent this from working?

 

[hippy dave]

Idk if the animal crossing tool has any limits on how often it can transfer or anything like that, but besides that what you're suggesting sounds technically fine.

 

[Ondrashek06]

This has worked successfully. For future reference, here's how I did it:
- Transferred save from Switch 1 using the tool.
- Used TegraExplorer to move SysMMC save folder to SD.
- Used a save decryption tool to turn useless save files into JKSV-compatible save folders.
- Installed ACNH on EmuMMC.
- Done initial game preparations until it let me save.
- Overwritten a JKSV backup folder with the SysMMC savefile & restored it.
- Transferred save to Switch 1 using the tool.