Many of us have had our posts deleted at one time or another, some without proper understanding or explanation and others with. If it is off-topic then the post probably should not have been made.

Keeping in mind making back to back posts will result in a moderator merging them sometimes along with a message about consecutive posts, that is problematic in my opinion however for you to state moderator changed the text, I cannot recall reading about that before. Post a link with the modified post along with the original unedited text too in order to verify what actually happened.