If you're using a recent CC version, you can alt/option drag on a title in a sequence and it will create a new duplicate title in the project instead of a duplicate instance.
ALt Drag a Title creates a unique new instance. of the Title. Edit it as you wish and it will update "automatically"
Titles I make seem to always go to the Graphics Folder I have Open in the BIn.
"Create New Title Based on"
Edit it ( obviously)
Use the Replace with or insert it where you want.
In FCP it worked like this:
1. Copy & Paste an old title.
2. Edit the title.
Surely you had to edit it too or could it read your mind.
Using "duplicate" (Ctrl+Shift+/) to make a new independent copy keeps the same name and is somewhat quicker. It only seems to work in the project panel, but might help a little.
Thanks much folks... The alt and drag within the timeline works well enough -- with the bonus of saving to the same bin as the previous title, so no fooling around with that... I'm hugely relieved. (more easy questions to come, I'm sure).