copying all metadata except thumbnail

[joergens.mi]

I do a lot of picture manipulation on my own photos. Some of the tools are destroying manipulating the meta information.
Is there a way to copy all information from the source picture -- like exiftool -TagsFromFile src.jpg -all:all dst.jpg
-- to another without overwriting the thumbnail in the destination. I want to preserve the embedded thumbnail in the destination picture.

Thanks for help

[Phil Harvey]

You could try this:

exiftool -tagsfromfile src.jpg -all:all -tagsfromfile @ -thumbnailimage dst.jpg

- Phil