Not needed entity tags are not removed from entity NBT when it is saved in structure

The bug

When the NBT data of a tile entity is saved in a structure its x, y and z tags are removed. However, for entities not needed tags are not removed.

How to reproduce

1. Save a structure including a tile entity and an entity
2. Open the structure file using for example NBTExplorer
   → The x, y and z tags are removed from the tile entity; the entity still has the tags listed below

Affected tags

Entity

• Pos
• Dimension
• UUIDLeast
• UUIDMost