I will try to explain as clearly as I can. If you have any questions, do not hesitate to ask.
1. Enable the "EA Automap" and "EA Netdump" options in spicecfg.exe.
2. Start the DDR normally in the profile where the data you want to import is located. Just go to the song selection and then close the game. A file called "automap_0.xml" should be generated in the folder, it contains all the data from the profile in which you played.
3. Move "automap_0.xml" to the folder where the "start.bat" file is in your MonkeyBusiness.
4. To facilitate the process, in the same folder of the previous step, move the "Import.bat" file that I attach in this post.
5. Open "Import.bat" with a text editor and replace the numbers in "--ddr_id 19299817" with the id of the profile to which you want to add the data. This id can be found in "db.json" of MonkeyBusiness. If you do not have the "db.json" file, it is because you do not have a profile created, you must create a profile in MonkeyBusiness and the file will be generated.
6. In the same file, modify if necessary "--version 20" replacing "20" to "19" if you have A20 or A20P. If you have A3 leave it unchanged. (If you get an error containing "ParseError: no element found" try changing the "--version" parameter to the other one, i.e. try both 19 and 20).
7. Execute the "Import.bat" file. The data should be merged correctly.
8. Repeat the process for each profile you want to merge.
9. Don't forget to disable "EA Automap" and "EA Netdump" when finished.
Import.bat