How do i copy objects from one mission to another?

[MadTommy]

Originally Posted by FG28_Kodiak

ALT+Left mouse select the opjects right click save, then you can paste it into an other mission right click on the map and load.
Or open the mis-file with an editor copy the section you wish and then paste it into an other mis-file.

Does not work like that of me.

Alt + left mouse button - drag over objects.

Right click on map i get a choice of:
Copy to file
Paste to file

I assume it is 'copy'.

Select Copy to File, this opens a dialog box where you can choose a file.

I select the file/mission i want to copy to, and the dialog box closes.

I then load the file/mission i tried to copy to, and the file has nothing in it, nothing is copied. If i right click I get the choice of Paste From File, selecting this i end up selecting the file i'm trying copy from and nothing happens again.

Grrrrr FFS! Clearly i'm missing something.. but your instructions make no sense in relation to what i am seeing.

Thanks for any help.