I think MKAC's T is absolutely right about the need to revisit. Not just because one time isn't enough processing (and it isn't), but also because each time we retell something, it's slightly different. It may be a difference in emphasis, a difference in "fact," a difference in the felt sense, or an additional detail not available to you before.

There was one particular memory that kept coming up for me for many reasons. We'd talked it through at least 5 times over the years, yet it came back again closer to the end of therapy. My T prodded me a bit by asking detail questions that were highly emotional (like, "Can you show me where the bruises were?") As I retold it, I found myself including a detail I'd never said before--something very hurtful that my father had said. I wasn't concealing it before; I wasn't aware of it in the prior retellings. It was important and opened a whole new avenue to explore.