区别就是两者意思是不一样，具体的不同如下

trace back to中文意思是

追溯;追溯到;

例句

According to planetary scientist Robin Canup, all three of Pluto's satellites could trace back to a single impact.

datebackto中文意思是回溯至;

例句

Experts have continued to piece together the ship's history and believe its construction could date back to the 1770s, during the time of the Revolutionary War.