Anytime there is an entry or multiple entries, the 1 and 1A, 2 and 2X or however many there are at the draw, they will likely have different post positions than the 1 and 2 post. The entries are there to let the handicapper know that if you bet one, you have both of them. But you should always look on the program below the morning line odds on the left hand side to see the pp#. That is how it will likely look. For instance the one horse could be the 1 post or 6 post and the 1A could be the 10 post, or any post. But not automatically the 2 post. If that was the case, trainers wanting the rail would always enter an entry, and scratch the outside horse, thus getting the rail. ( You have to watch us trainers every minute). Lol.
So if you see any entry, always check the post position ( pp#) which should be on the base of the 1 and 1A horses program line. Not at the bottom of the page, at the bottom of the 1 horses approximately 1" wide left to right line on the program. See if you can find that when looking and make it a habit with all races with an entry.
Follow up if needed Madison.
All the best sir.