The metatools in the Selection Tool are program specific (not document specific).

Other metatools, like e. g. expression metatools, are document specific (not program specific).

… in an existing file …

This sounds like you are talking about document specific metatools - right?

Do you have the full version of TG Tools ?

document specific

yes I do...

… yes I do …

Since you do have the full version of TG Tools, look under the "Modify > Transfer" menu.

I did, not very clear...could you help?

Quoting the manual:

Modify-Transfer
This plug-in enables you to transfer (copy & paste) things that Finale can‘t normally copy itself. Most of these items are intended for copying from one file to another. The process involves these steps:
• place checkmarks next to the items that you want to transfer
• go into the source file. If needed, select a measure region. Make sure ‘Read now’
(=copy) is checked, and hit Go.
• now go to the destination file. If applicable, make your measure selection there.
Make sure ‘Write now’ (=paste) is checked, and hit Go.
You can write (paste) multiple times without having to read (copy) the data each time. Just
make sure ‘Write now’ remains checked (uncheck ‘Automatically switch …’).

I will try

thanks for the moment

dear Peter,

the manual you are quoting is the version 2 manual?

Yes.

I do not know whether there is a newer manual.

ok,

to me it works for articulations NOT at all for expression (it doesn't transfer anything...)

You could ask Tobias Giesen about it.

I am confident that Tobias would like to get feedback about TG Tools.

waiting for Tobias answer...