Mailing forms involving multiple state returns

[429freckles]

I still cannot e-file my child's return with Form 8615 using pre-TJCA calculations. I need to mail them but am having trouble understanding what forms to mail where. 

For Federal 1040 - I mail just federal returns

For Oklahoma - I mail my Oklahoma return plus my federal return plus my NY return because OK is my state of residence & I am asking for a tax credit relief from duplicated income taxes on my NY return.

For NEW YORK - I am totally confused. I know I mail my New York return plus my federal return BUT do I also mail them my Oklahoma return? I am only paying taxes on my NY Sourced income. I am not requesting/getting any tax credits from New York. (I am a non-resident college student)

TURBOTAX is NOT at all helpful in telling you what forms specifically to mail to which state when there are multiple states involved.

I need guidance.... please.