Megawizard has no ALTSYNCRAM

I had a vague recollection that qmegawiz could be used to fixup older components, eg., this came from the Quartus handbook:

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If a megafunction changes between software versions, the variation files must be regenerated. To do this, use qmegawiz -silent <variation file name>. For example, if your design contains a variation file called myrom.v, type the following command:

qmegawiz -silent myrom.v r

For more information on updating megafunction variation files as part of a scripted flow, refer to “Regenerating Megafunctions After Updating the Quartus II Software” on page 2–23

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It looks like you've found the 'silent' option. However, this implies you should not need to change your design. Perhaps submit a service request to clarify?

Cheers,

Dave