Import of K-1

I have a K-1 from a MLP. I have own it for a few years. This yr, I tried importing the TXF file. The import works fine. However, it is not linked/associated to the MLP's historical data. e.g. Partner's Share of profit, loss, capital at beginning of yr (which would equal the share at the end of last yr), pass loss carryover, etc.

How do I link that import to the MLP that I own -- i.e. this is NOT a new investment this yr; but a continuation of an existing investment?

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