I draw your attention to the following tags (numbers are of Open Qs):
These would seem to cover virtually the same thing.
migration has this usage guidance:
Migration specifies 1) the process of moving information between different data formats or 2) the process of moving an existing user environment to a different system, for example when switching operating systems.
but seems to be a direct duplicate of migrate-data:
The moving of data either between two accounts on a service or between services. Normally asked about a service's default functionality.
"Data Liberation" is a term popularized by the team that now does google-takeout, but it has been used on questions that aren't for Google products.
Granted, one may export data without looking to import it (like when archiving data from a service that's closing) [see also: import], but the "export" and "migrate" tags are used fairly interchangeably.
So, how can we fix this issue?
My first suggestion is to make data-liberation, whose Usage guide is:
Data liberation is the activity of retrieving a user's data from a web service.
a synonym of export whose Usage guide is:
Grabbing your links, contacts and other account information and data in preparation for another service or for backing up