| 6.0 | Automation Catalog | Removed | Automation Catalog has been fully removed. Automations not yet migrated to Operations Manager will be lost on upgrade. |
| 6.0 | Delete Variables API | Removed | The deleteVariables API has been removed. Use updateGoldenConfigTreeVersion instead. |
| 6.0 | ENC encryption (global key) | Replaced | The legacy $ENC global encryption key has been replaced with a server-specific custom encryption key. Existing encrypted strings require migration before upgrading. |
| 6.0 | OperationId tasks | Removed | Twelve operationId tasks have been removed from Platform 6. |
| 6.0 | Pre-Built Wizard, Pre-Built Promotion, and App-Artifacts | Deprecated | No longer maintained as of Platform 6. Migrate to projects or use alternative installation methods. Pre-builts installed before upgrading continue to function. |
| 6.0 | Profiles | Deprecated | Profiles are deprecated in favor of environment variables and a platform.properties file. The switchActiveProfile API and UI-based profile switching have been removed. |
| 6.0 | Retrieve references endpoint (/references-to) | Replaced | Replaced by the /discoverReferences endpoint, which provides a wider range of reference discovery functionality. |
| 6.0 | Server name property (serverName) | Replaced | Replaced by serverId in properties.json. |
| 6.1 | Dual-format integration responses | Scheduled for removal | The dual JSON and plain text response format will be replaced by a single response format determined by the Content-Type HTTP header in Platform 6.1. |