My belief is that Trump now sees his trade war with China as costing him votes because of it’s purported negative effect on the stock market. Trump now needs to rev up the stock market for his 2020 race. Self preservation at its finest. If he wins, assume the trade war will commence post reelection.
I do not think a new trade deal with China (if one is cobbled together) will be better than what we had. But it will stabilize the economy and boost the stock market.
That said, I do think any new deal will have language protecting US intellectual property. But this is a hollow pledge because most of the intellectual property worth protecting was stolen long ago.