If you insert a viewdoc macro using the wiki markup shortcut, that is typing

{viewdoc:filename.doc}

the wiki markup code differs from the one generated by adding the same macro from the macro browser:

<ac:macro ac:name="viewdoc"><ac:default-parameter>test.doc</ac:default-parameter></ac:macro>

<ac:macro ac:name="viewdoc"><ac:parameter ac:name="name">test.doc</ac:parameter></ac:macro>

As a consequence, macros added using wiki markup shortcuts cannot be edited.

This is also affecting content migrated from previous versions using wiki markup.

Workaround:
You can add the macro using the following string instead:

{viewdoc:name=filename.doc}

In Oracle database this can be changed in DB with the following query:
This will modify your database. Please take a backup or your instance before applying these changes.

UPDATE bodycontent 
SET body = REGEXP_REPLACE(body, '<ac:macro ac:name="viewfile"><ac:default-parameter>(.+)</ac:default-parameter></ac:macro>', '<ac:macro ac:name="viewfile"><ac:parameter ac:name="name">\1</ac:parameter></ac:macro>')
WHERE contentid IN (
SELECT contentid FROM content WHERE prevver IS NULL AND contenttype IN ('PAGE','BLOGSPOT') AND content_status='current');

You will need to change the text viewfile by the name of the macro you want to migrate (viewdoc, viewxls,...).