Sorry for the delay, I was on vacation.
My English is really bad which sorry if I do not understand your question exactly.
If you have to struggle with the merge text, here is an explanation.
Why must do it this way?
The text merge will be easier to use with some options: Center, Left, Right, Line break.
MakeBlock should add this to the application because it's hard to do something perfect.
Conclusion : it misses formatting options or