When working at scale with MetaSounds, occasionally you may wish to migrate the input default values from one asset to another, whether that’s done by overwriting existing values or creating a new preset.
The MetaSound Input Migrator facilitates both of these operations and allows users to store sets of linked inputs between two assets that can later be recalled when migrating presets of the original asset. This means users only need to set up linked inputs once per pair of assets.
https://dev.epicgames.com/community/learning/tutorials/98Vn/unreal-engine-techaudiotools-content-5-7-using-the-metasound-input-migrator