loop not shown in source loop list

[solquest]

Hey there.

I use tXMLMap with two xml input files (both type = Document) and one output file (type = Document).

The first input file (row32) has multiple loops, while the second one (row12) has only one.

On the output mapping I've been able to associate every loop receiving data from the first file with the right loop (with the [...] source loop icon).

Now I'd like to map also the second input file loop with one output loop, but that's not shown in the source loop list.

What am I missing?

Thanks.