Retirement tax questions

@DanaB27 Follow-up question.  I completed my 2019 amended return using TT Desktop version, which prepared the 1040-X and attached the rest of my 2019 return including 1040, schedules, itemized deductions, gain/loss statements, etc. (minus Form 5329).  I read online that I only need to file forms that have changed along with 1040-X.  Thus, I am confused why TT prepared an amended return that includes all forms from the original return (minus 5329).  Should I send the IRS what TT prepared for the amended return, or should I remove unchanged forms?

 

Also, I read that I will sign the 1040-X only and NOT the 1040 (in the amended return), even though there's a 1040 signature line. Correct?   Thank you again for your help.