Need to amend a return because of a second late K-1

If you want to make changes or add a document to a tax return that has already been submitted, you should follow these guidelines. 

• You must first wait until the initial return is completely processed. 
• You will have to use the same TurboTax account that you used for the original tax return. 
• Once you begin your amendment, you'll see your original return.  
• The refund calculator will start new at $0 and only reflect the changes in the refund or tax due 
• Only make changes to the areas of your return that need amending. 
• You have three years from the date you filed your return or two years after you paid the tax due (whichever is later) to file an amendment 

Select your product below and follow the instructions. 

Amend TurboTax Online 

Amend TurboTax CD/Download 

Perhaps my question was not specific enough, but I discovered the answer anyway. The point was that when I began the return-amending process, nothing that Turbo Tax asked me applied. After worrying about this for a while, I just ignored the questions, searched on "K-1," and added the new K-1 form to my return. However, when I was done, I found a bug that will take me lots of time to work around: TurboTax claims to support printing of only the officially required documents, but there is actually no such option. When completing an amended return, I see this:
However, there is no way to choose "All official forms..." or anything else; I can print (140 pages) or not, period. Scrolling through the Discussion files reveals that I'll need to do a page-by-page comparison of the old return and the amended return to determine what forms need to be filed with the 1040-X, a very time-consuming project. If TurboTax is not going to support the option to print only the necessary forms, then at the very least, please change the instructions displayed!!