Indesign CC 2014 - Dictionary keeps changing to USA when pasting

Question

When pasting from 1 Indesign document to another, even though all Indesign preferences, styles used, text boxes that I'm pasting to and from and all text - is UK English, as soon as I paste, it changes to USA.  Default is UK (when I create a new text box as well).

Answer 1

If the copied text and the destination insertion point had styles with the same names but different language definitions that could happen. Because the language is applied to characters and styles it can be hard to get every character in the same language when you are cutting and pasting.
I use this AppleScript on both the source and destination documents when there's an unwanted language mix causing problems:
tell application "Adobe InDesign CC 2014"
    set pstyles to all paragraph styles of active document
    repeat with i from 1 to number of items in pstyles
        try
            set applied language of item i of pstyles to "English: UK"
        end try
    end repeat
    set cstyles to all character styles of active document
    repeat with i from 1 to number of items in cstyles
        try
            set applied language of item i of cstyles to "English: UK"
        end try
    end repeat
    set applied language of every paragraph of every story of active document to "English: UK"
end tell