i agree it can't be done with any version of TT.
here are the instructions from form 8824 regarding multi-asset exchanges. They are covered by Regulations section 1.1031(j)-1.
basis in the exchanged property is figured per subsection (c)
while the instructions use the word "and" I believe it is more correct for the word to be "or". you have to know the basis in each property for purposes of depreciation and for purposes of disposal even through another 1031 exchange.
Reporting of multi-asset exchanges.
If you transferred and received (a) more than
one group of like-kind properties or (b) cash
or other (not like-kind) property, don't
complete lines 12 through 18 of Form 8824.
Instead, attach your own statement showing
how you figured the realized and recognized
gain, and enter the correct amount on lines
19 through 25. Report any recognized gains
on your Schedule D; Form 4797, Sales of
Business Property; or Form 6252,
Installment Sale Income, whichever applies
