Sunoco LP Schedule K-1, Box 1 has amount not agreeing with activity. TurboTax suggests including amount on another K-1. This doesn't make any sense to me.

If your K-1 has more than one item filled in for boxes 1, 2, and/or 3, then you will actually enter two K-1s, one to report the income reported in box 1 and a second K-1 to handle the income reported in box 2 (and a third for box 3, if applicable).  The second K-1 will have the same basic information as the first one (name, Federal ID number, etc.), but it will report the income for box 2.  

As for the other items reported on the K-1, include everything but the income in box 2 on the first K-1.  It should not matter which K-1 reports the other items, as long as all of the information is only entered one time.