Modify/Correct 'Classification ID' and the 'Category ID'

[xaher]

Is it possible to change the 'Classification ID' and the 'Category ID' afterwards? For example, in the language abbreviations according to RFC5646, there was an error in Hebrew ('heb' instead of 'he'). The writing systems are also not entered entirely according to ISO 15924 (writing system code is always lowercase instead of initially uppercase, i.e. 'ota-Arab' instead of 'ota-Arab', except for 'unknown'). Since these are values ​​retrieved on transformation, it won't be a good TEI either.

There are also heterogeneous IDs for other entities, so we have 'cmo_notationType' (OK) and 'cmo_musictype' (instead of 'musicType'). I also find some IDs in the 'Content Type' not particularly XML-compliant ('Song-Text_collection', better probably 'songTextCollection').