@Petro ***********
can you find this rule anywhere published? No. That should tell you enough, whatever the agent says.
And you're asking in a group where the steady crew knows more about visa and immigrations matters than immigrations themselves, even about things they have no personal experience with. Wouldn't you think that if this rule existed, the people who know all the ins and outs of the system, would know this too? I think we deserve a little more trust.