Based on your information, I suspect you indicated during K-1 entry that you are not an active participant in this partnership. That would make this a passive activity for your, and passive losses are only deductible to the extent you have passive income. That is likely why TurboTax entered a "zero" when the box 1 amount was a loss, i.e., your passive activity losses were disallowed. The "unallowed" passive losses are carried forward to a future year when you either have passive income or you dispose of your interest in the partnership.
Passive activity losses are commonly associated with rental activity reported in box 2. You should confirm your entries in TurboTax for this K-1, in particular the question about whether or not you are an active participant in the partnership.
To get back to the K-1 summary screen and find the Schedule K-1 to edit, click the "magnifying glass Search" icon on the top row, enter "k-1" in the search window and press return or enter, and then click on the "Jump to k-1" link to find the K-1 you need to edit.
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"
