We are talking very often about Views and Lists because most of the items and rows we can see are based on our List infrastructure. Our Document Library is just a List and the saved documents are just attachments to a list item. To have a look what is saved on the doclib or list we might use our own Views or the standard one AllItems.aspx.
I will start to show you a possible confusing “View”.
The Attendees link in the green oval will point you to MyMeeting/Lists/Attendees/AllItems.aspx
The Manage Attendees link in the blue oval will point you to MyMeeting/Lists/Attendees/ManageA.aspx
As a user you will mean that both pages AllItems and ManageA are views on that List with all the attendees but that is wrong as you can see when you manage the List itself:
You see the “available” view in the orange oval. Here we have to talk about a special feature because:
Because ManageA.aspx is not a view you will not see it in the List settings for the Attendees list. But when we have the out of the box WebPart to show the attendees list we might also use this as a View and you can choose that page like an own designed View. But now you want to see a “different View” inside that WebPart:
Screenshot made on ManageA.aspx
Screenshot made on AllItems.aspx
There is no View anymore called Manage Attendees.
There is no general answer because it depends on the reasons you had when you changed the Selected View. A couple of ideas I can provide to you but customizing is an open end brain-storm.
Here you see one example how you can be confused when working with all the possible ways to edit Pages and “Views”. The title for this post contains also Survey and Calendar so you might find some more ways to confuse yourself. At the end of the story you should think about Views (configured for the List) and Pages with WebParts that might also show a view for a List.
Have a training portal where you can test your own ideas when customizing before doing this on a production environment.
Your helpdesk might also support you before you run into problems which confuses you. After the problem occurred as well.