Sorry, i think i didn't explain myself properly.
What i want is to export those new statics using TRViewer, then import them into my TR2 level.
To do that i need to generate a .tr4 file, because TRViewer can only open those.
So i followed dissapearing-boy's instructions, and they are saved into the .was properly. Then i generate the .tr4 level with the converter and it is successful.
But when i open the .tr4 level in TRViewer the new statics aren't there.
Dissapearing-boy said it isn't necessary to use the editor at all for this, so i'm pretty confused right now.