Could we freeze/mark nodes that were sent for translation? For example, I have 2 websites with two different languages and I need to reuse one page from one site on another one. Therefore, I need to send it for translation. However, it doesn't mean that during translation time, I could not change the source on the original page. By the end of the day, I may end up with the situation when I was an editor have translated content for my second site, but the site I'm copy from has been updated.

Could it be handeled some how?