Hi @
thanhlan2103,
Welcome to X-Cart forums and thanks for your message!
It is indeed a good advice for developers who started learning X-Cart 5.
When you separate your code from the core, it allows smooth upgrades and makes sure that your changes will not be lost.
Tony
Quote:
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Originally Posted by thanhlan2103
It will affect all of them yes but you can limit which ones are affected with your custom module. In XC5 you can't just go an change some code - it has to be done with a module or you lose changes on next upgrade.
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