User-created modules in SwordSearcher are editable.
Maybe you mean a module built as a non-editable module in Forge? No, that cannot be changed -- the purpose of that is so that third-party publishers can make modules that can't be edited or mass-exported. It's not a reversable thing. But if that is the scenario you're talking about, all you need to do is remove the non-editable checkmark and rebuild the module from your source files.