I did a lot of correspondence templates, and request you revisit the functionality of the "Import from Document". It appears correct, but it doesn't produce a clean copy (Source) and has lots of extra coding which seems to cause spacing problems (soft return vs. hard return). I cannot get a single line return; it is always 1 1/2 which is not the desired look for an address which you want stacked and not large spaces between. The work around I found is not to use the Import from Document function, but to copy and paste the Document format into the HTML directly. Then it seems to keep the spacing/returns as desired.

This may align with an already submitted idea named: Implement a more capable correspondence editor