Simply invert the logic. :-) I do it this way:
1. I have the subject in first line in all my raw post data files I feed to TP, use first line as subject and delete it with every post TP does.
2. I use replacements to re-insert the subject into the post selectively. Replacing
Code:
^
with
Code:
<postSubject>\n\n
with regex enabled will do the trick.
Work done - and all forum-dependent. :-)
Of course you simply can delete first line in forums where you need it with a replacement, but with my approach you even can style the first line forum dependent which is what I want to do.
Wurstmu