Summary:
InDesign is unable to maintain separate color settings for each version. Whenever a different version is activated, the color settings are forcibly overwritten by the last activated version.

Steps to Reproduce:
Launch InDesign 2025 and set the color settings to “Preset A” (e.g., a print vendor’s recommended settings).
Launch and activate InDesign 2024.
Without any warning, InDesign 2024 will adopt the same Preset A color settings.
This also occurs in the opposite direction: activating either version will overwrite the other’s previously configured color settings.

Expected Behavior:
Like Photoshop and Illustrator, InDesign should maintain independent color settings for each version.

Actual Behavior:
InDesign, Illustrator, Photoshop, and Bridge all write the currently selected color setting preset to the shared sync file:
~/Library/Preferences/Adobe/Color/ACEConfigCache2.lst
This file is what allows Bridge to synchronize color settings across Adobe apps.

However, InDesign is the only application that overwrites the settings record for another version of InDesign, regardless of version.

Root Cause:
All apps use the same file, but only InDesign fails to differentiate versions.
This causes one version of InDesign to overwrite the color settings of another—simply by being activated.

Commentary:
This behavior disrupts professional workflows.
In environments such as print production where different versions of InDesign must use different color settings (e.g., for different clients or print vendors), this is a critical issue.

InDesign should follow the same behavior as Photoshop and Illustrator:
Write version-specific entries to ACEConfigCache2.lst, and avoid overwriting other versions’ settings.