Even when your account is deactivated, the social network continues collecting data about your online activities. All that data gets sent back to Facebook and is tied to your account while it’s in this state of limbo. It’s as if you’d changed nothing. Facebook says it only removes all of your data if you permanently delete your account. The average person would assume that Facebook pauses data collection when your account is deactivated. But deactivation is a deceptive practice.
— source cnet.com | Apr 9, 2019
https://www.facebook.com/help/delete_account