I don't believe this is the intended behaviour: When migrating vocabulary terms relationships from D6 to D8 all nodes have their modification date changed to the time of the migration.
Steps to reproduce:
1. Use a Drupal 6.38 database with nodes with taxonomy terms. Take note of the modification dates on the nodes.
2. Migrate to Drupal 8.1.
3. Compare the modification date on the nodes in Drupal 8.1.
Expected behaviour:
From my point of view modification date should not change because even though technically things change because we upgrade the Drupal installation, the modification date from a regular user should be the same.
Comments
Comment #2
mikeryanThis is a product of separate term relationship migration from the parent node's migration: #2597650: Term references should be incorporated into D6 node migration, we should fix that.
Comment #3
NiklasBr commentedThanks!