Change record status: 
Project: 
Introduced in branch: 
8.2.x
Introduced in version: 
8.2.5
Description: 

Previously the generated template for a taxonomy_term migration used version agnostic source plugin. This was changed to version specific source plugins to account for differences between Drupal 6 and Drupal 7.

Before (D6/D7):

source:
  plugin: taxonomy_term

After (D7)

source:
  plugin: d7_taxonomy_term

After (D6):

source:
  plugin: d6_taxonomy_term
Impacts: 
Site builders, administrators, editors