Trying to file an old tax return with missing schedule K1 from Energy Transfer Partners LP

Hello,

 
My brokerage statement is showing "PARTNERSHIP CASH DISTRIBUTIONS" from Energy Transfer Partners LP.
All those cash distributions were reinvested to the stock.
But I cannot retrieve the requisite schedule K1 or the From 1065. When I called the company's hotline, they told me that the Form 1065 for that given year is no longer available and that they CANNOT help me getting a copy of that old schedule K1 anymore.
How can I enter that information in Turbo Tax? I have been filing my taxes using Turbo Tax for over 24 years now And I never had issues and was able to figure everything on my own. But I'm totally clueless about this particular issue and would very much appreciate if someone explain to me in simple terms.


THANK YOU!!