I had the same situation...1 partnership that contains several private equity passthroughs for wages and UBI. I used the method suggested to input multiple K-1 in Turbo-Tax for the same partnership...but only setting up the extra K-1 with key partnership info (name, address, EIN), and then indicating only info I had to report was Box 20 code-Z...the followed the question prompts to input each of the various business EIN's with their wages and UBI info. Seems to process in turbo-tax OK with not errors noted, but I am not sure it will correctly reflect when this goes electronically to the IRS. Wish TT would allow a screen to input multiple business entities for Box 20 code Z info...seems like this could be an easy fix.
