I am working with an outdated WHMCS installation (v5.2.15) and have about 40 clients I need moved into a current installation. Existing product / services have been created in the new installation. We are unable to use an existing WHMCS module due to the outdated version being unsupported.
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With regard to the data entry, we do need things like registration dates, updated renewal dates, and client creation / order email notification disabled per account / order creation.