How to move a tag to another field

[ohrenkino]

There is something similar in the FAQs:

Actions and batch-operations

How to append the string " xyz" to the content of a tag field? Create a new action in an existing action group and choose Format value as action type. Field specifies the tag field the formatting rule should be applied to. Format string must have the field placeholder for the field selected above and the string which should be appended. Example: If you want to append the string " xyz" to the current value of the comment field: Action type: Format value Field: COMMENT Format string: %com…

instead of the "xyz" use %year%.

Only: it does not make sense esp. if you delete the contents of the field YEAR afterwards. You go from structured data in fields to an unstructured string in a single field.
I would no delete the contents in the field YEAR - because if you think different in the future, you can easily remove the data that corresponds with YEAR from the field ALBUM.
And: if you add YEAR to ALBUM, use a unique separator between the pseudo-fields for reasons of easier splittability. The hyphen is a bad separator in this respect.