Yes may require some testing, it is certainly prone to doing some weird stuff. I know Rav had to do plenty tinkering to get them to work on the new site normally. Simple copy paste works for me currently, but I don't use excel. Can try using the site below, just copy-paste there, click the tableize button. Then copy & paste here, and should come out ok (and must use the "keep" when pasting like CC suggests above). Only takes a few seconds.