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How do I decide in which case to create a new module vs. just updating an existing module (or app) that I have downloaded? I read lots that it is better in some cases to create a new module, by copying an existing one and then modifying it.
I want to know exactly when it is best to do either one? If there are certain modifications it is best to create a new one but what constitutes a modification? Adding a field non programmatically? Adding a workflow?
You should always create a new module.
Updating a module (by changing code or XML) mixes your changes with the functionality of the original module, and gives you no way to install newer versions of the original module.
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