If you are changing the URLs and / or go from non-SSL to an SSL site, you would have to regenerate the public keys both on Moodle and Mahara and then update them manually in the MNet configurations to be on the safe side. If you don't make those changes on both sites, you shouldn't have to regenerate the keys. You can test that easily by trying to log in. If you make a change on one server but not the other, you would need to update the settings.
Cheers
Kristina
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What changes are required to be done in both sites ?
Will SSO keys remain same or another key will generate ?
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