Please combine editions of a Robert Maurer's book

[SeaKing]

Hi,
I wanted to add an edition of this book https://www.goodreads.com/book/show/2...,
but when I finished, somehow I found it a separate book here: https://www.goodreads.com/book/show/3...
I did add several editions of other books but never have this issue.

Please help combine the above mentioned editions.

Thank you so much,

A reader

[Codex]

Done.

[SeaKing]

I've just checked, it's perfect.

Thank you for such fast action!