Disappearing missions in Dragon Age Inquisition?

As players of this game series know, your actions in one place can have an impact on many other parts of the game.

One place where this becomes a problem is in completing side quests. I know it has happened in past dragon age games where if you advance the plot past a certain point, you lose the ability to do certain side quests (if you have not already done them).

I read somewhere (very unofficial) that this should be less of a concern in Inquisition, but now I am questioning that. There are a couple missions I think I missed out on and I am wondering if anybody can verify this, or maybe I am just going insane?

While I was in Haven, there were war table missions for "hard in hightown" in kirkwall. And once I completed it I swear I was given the choice of traveling to it (like when you first unlock an area, you will get a "quick" option to travel there immediately). I figured I would come back to it later since I was still very early in the game. Get to skyhold and that area is no longer there!

This also happened again with a similar mission after skyhold. Now I have completed the final hard in hightown mission on the board (there are multiple missions available over time), but this last one does not involve traveling.

I just seem to remember so clearly I had the option to travel to hightown while I was in Haven and I remember being very excited to see how it looked between the games... Now I am starting to think I was crazy, but that is a lot of detail for my mind to make up...

Is there a "hard in hightown" mission early in the game where you travel? Or no?