Your bho should be properly purged before diluting it with the coconut oil. But no, if you mix unpurged bho, or "tane soup" into coconut oil and decarb it, the residual solvent levels may decrease, but certainly not too much in my opinion. That is also not the correct way to go about it. It should be decarbed and purged before hand.
As in theres still full chemical butane and thc molecules? Yeah I think that's the case because I tried to research a different molecule for BHO for my Logo and was unable to find anything.