I don't think that when issues get resolved, the attachment to one's T turns off. (And if your attachment is still there, it doesn't imply you haven't resolved your issues.) Once you've made the attachment, you will probably maintain it as long as you continue to work with your T. I have had big and deep issues I worked on with my T, and small daily life things from time to time too. Throughout all of this, the attachment endures and is helpful. Even after I am done with therapy, I think the attachment or at least some element of the relationship will continue and be helpful to me in tackling problems on my own (internalization).