language tags lost
When importing pages from other PDF's, any language identifiers associated with the individual accessibility tags should be imported. Currently the language tags are lost for the documents inserted. Adbobe Acrobat Pro and Adobe DC
I have shared your concern with Engineering team. Meanwhile Please share some sample documents via weblink which you are trying to combine so that we can fix it for you.
I attached files to comments on 10/24/2019 as I am unsure what "weblink" is. Is this sufficient?
Files when separate
Properties Example after
After documents have been appended, the language properties