Modifications for AHT components have been consolidated to the AHT level instead of the separate ATT and ACW levels previously. Any existing modifications to ATT and ACW will still be visible in existing forecasts but will be marked as legacy. While you can still add/modify modifications to the forecast for AHT and Volume, since legacy modifications cannot be changed, if it is necessary to change the legacy ACW and ATT modifications then a new forecast should be created and modifications should be made to the combined AHT metric.