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This is by designed and will be closed for the following reasons… 1) “Transforms” are an exception for animation where all three floats of the transform vector MUST be animated. This is an architectural decision made for performance reasons. 2) Deleting keys in a clip vs Add/Remove properties to a clip are two different operations should not be compared for consistency. a) Deleting all keys from a single transform property gives the property its “default” value, since it cannot be removed from the clip (transform vector). This means the property will be evaluated with its default value, not the scene value. b) Remove Properties removes the entire transform vector. The transform vector (not a single property) is either animated or not animated. This is why the entire transform vector is removed. As for the exceptional behaviour of removing all floats from the transform vector instead of only removing the specifically selected float, this is expected and required behaviour for optimizing runtime performance. Thank you for your feedback and hope this explanation help understand this behaviour a bit better.
Steps to reproduce:
1. Create new Unity project
2. Make sure Editor theme is set to Light
3. Create a new "Cube" GameObject (GameObject > 3d Object > Cube)
4. Open the Animation window (Window > Animation > Animation)
5. Create a new animation by pressing the "Create" button in the Animation window
6. In Animator window press “Add Property”
7. Add Transform > Position property
8. Expand the Property
9. In Position.x property press on button on the right and select “Remove properties”
10. Observe Transform Property getting deleted
11. In Animator window press “Add Property”
12. Add Box Collider > Center
13. In Center.x property press on button on the right and select “Remove property”
14. Observe “Cube : Center” Property
Actual results: Inconsistent behavior between Properties deletion, removing Transform child properties, deletes entire Transform Property, meanwhile on Box Collider Property, deleting Center.x removes only child
Expected results: Consistent behavior across context menus, wither both remove selected child property or both remove the entire parent block
Reproducible with versions: 6000.0.64f1, 6000.2.15f1, 6000.3.2f1, 6000.4.0b1, 6000.5.0a3
Tested on (OS): maOS Tahoe 26.1 (M1)
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