This is a work-in-progress Savefile Editor for Afterbirth+. The main thought was, that I wanted to copy my progress from the Nintendo Switch version to the PC version. I found the Afterbirth savefile editor, which obviously only worked for Afterbirth, took it's source code (which he happily put up to download) and edited it so it would work for Afterbirth+.

Editor for Afterbirth

It is aswell, Windows-only, should work with Steam Cloud and offline saves, can edit the Note-marks, values like Mom Kills, Secrets, Challenges, Items, defeated Bosses and unlocked Seeds (except for Afterbirth+ seeds)

How to use it:
1. Create all three savefiles (Start a run in each, until the "Continue" button appears)
2. Close Afterbirth+ and open the Editor
3. Click on "Auto-Load" (Or search your Steam Cloud folder with the Manual Load)
4. Change the Savefile you want to Edit at the top left "Current Save"
5. Edit the savefile how you like it
6. Hit "Save Current File"
7. Start Afterbirth+ and enjoy!

Known Errors:
-Greed Donations and the number of cleared Floors don't work
-Bosses added with Afterbirth+ are mixed up
-Afterbirth+ Special Seeds not added