Does the K-1 have a partnership name? Address? EIN? If so, I would expect a 1065 was filed. If Not, i.e. the key elements are blank, it was done just to show the equitable distribution of what they considered a joint venture not subject to filing of 1065. (not saying that is right!)

For the year you are doing, are there any 1099s? If so are they SSN or EIN?