Hello OD,
Thanks for your reply. The simplest way to do this is to "Keep the test only" when you copy from other sources. You can try this by copying your file into a new document and selecting "Keep text only" when pasting. This way, the formatting will be removed and then you can easily sort your list.
This will work also if you have selected text that you want to sort in your document, then highlight/select them, and then right-click and select "Keep Text Only" under the paste options.
Please let me know if it will work for you.
I will be posting this also in English.
Regards,
Carlo