Token Renaming in All Sets

[six7]

Currently, renaming a token by clicking on its individual instance (e.g. token.sm) updates any token values that reference it across all sets. However, renaming via the parent group name (e.g. token) does not propagate to every set. This inconsistency can lead to confusion and require manual fixes.

Make token renaming behaviour consistent: whether renaming from the parent token or from an individual instance, the change should apply to every set containing that token.