While I'm waiting for you to get my Discord request, the SL_C11 map position is displaced in More Slugcats, because rather than replacing the line with one without "Shoreline", your file deletes it and then MERGEs in a line meant for the non-More Slugcats map.

Here's what I do (in my own mod of fixes):
[FIND]SL_C11: 562.8417><281.4304><730.2355><917.8553><2><Shoreline
[REPLACE]SL_C11: 562.8417><281.4304><730.2355><917.8553><2><
[FIND]SL_C11: 168.1065><137.8095><488.1681><852.9338><2><Shoreline
[REPLACE]SL_C11: 168.1065><137.8095><488.1681><852.9338><2><