Partnership disposal type of Cedar Fair question

Hi there, What type of disposal type do we select if we didn't sell any of our units during the Cedar Fair/Six Flags merger but received a 1099-B for a fractional share during the conversion. It was not a complete disposition, nor did I sell and am receiving payments, so do I check disposition was not via a sale? I tried no entry but then Turbotax unchecked my partnership description of "This partnership ended in 2024". Thank you.