[Modding] Modified files get rewritten when I open as a local mod

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1

When I try to bundle modified .json files (blood particles) with a custom data file into a local mod, the modified jsons get rewritten into vanilla versions again. However, these modified jsons+.dat works perfectly fine if I manually replace my game files with them.

How do I upload my mod without AoE2 butchering my files?

Thanks in advance

2

If it helps, here is a copy of the mod I’m trying to upload.
All it does is change the timers on blood and corpse decay. When I try to load it ingame, the json files keep getting overwritten back to vanilla versions.