Some of the stocks I owned in 2021 required K-1 form. I sold those stocks in 2021. The forms still pop up on my Turbo Tax filing for 2022, so do I simply delete them?

[DoninGA]

If the K-1 is not needed for tax year 2022 then you can delete the K-1.

[Mike9241]

you may have messed up in 2021 by not indicating a full disposition on the k-1 form. that is entered in a separate section when you indicate during entry you disposed of the security. the result could be you misreported the gain or even have passive losses that have not been allowed. if you don't indicate a full disposition then suspended passive losses would have not been freed up upon complete disposition in a taxable transaction. they would still show up on the k-1 data. normally if done right the k-1 does not show up the following year.  we have no way of knowing if you handled the sale correctly for schedule D and the partner income/loss

[VolvoGirl]

If you have trouble deleting a K-1, try deleting it this way. Go to the K-1 interview section here
Federal on the left
Wages and Income
Then scroll way down to Business Items (or S-Corps, Partnerships, Trusts)
Schedule K-1 - Click the Start or Revisit button

If the first screen says "Do you want to review Schedule K-1?". You have to answer Yes and then click Update by the Schedule K-1 type (LLC, S corp, trust). The next screen is the Summary screen listing all of the K-1 entered for that type of entity. You can review, edit or delete it there.

How to Delete a K-1
https://ttlc.intuit.com/community/using-turbotax/help/how-do-i-delete-a-k-1/00/26655