I am assuming that you are filtering on an applied stereotype and that is making your adapters disappear. One way to get them back is to add an OR condition to your component filter:
You can also use dot notation instead of adapters to merge/unmerge signals if that's easier and then you can put stereotypes on those components:
You can also skip the need for adapters to unmerge by using dot notation to select the element from the architecture port:
Hope this gets you unstuck. Feel free to reach out if you run into any other issues.
Josh
