sorry, I did not get it. Before direct rollover (non-taxable) was on Line 16a and 16b (for example, 16a = 30,000) and 16b = 0. and line 15a was Roth conversion and 15b taxable amount, so if you converted only 15,000 out of 30,000 and then 15a will 15,000 and 15b = 15,000 too.
Now, if you use the same number how to do it on line 4a and 4b?
