Does MageRewards have any special requirements for Magento upgrades?
Nothing within our software modifies any core Magento files directly. Only if Magento deploys a mandatory template code change, then will you need to contact us before upgrading to ensure compatibility. As well, we recommend doing research before upgrading to any future minor versions (1.*) to confirm that we have checked for any compatibility issues.
We’ve done everything we could to retain upgradability of the Magento platform while MageRewards is installed, so we expect upgrade problems to be scarce.