Single game tickets available? Restriction CSL

Hey guys,

Planning my first ever vists to MMP, and looking at some single game tickets for a July game that just went on sale. I see some that show up available that I'd like, but show they are restricted for CSL. Looking online it looks like those require a season ticketholder license, but it's weird they are showing up available for a single game like that. Can anybody else provide me any additional info regarding these?

Thanks a ton in advance.