ok...so two systems, win 7 win 10, both 64 bit. Since installing ccleaner on both systems, the history of opera would get deleted. However, since updating ccleaner, Opera history is removed.
Running the free version of ccleaner and using opera. CCleaner will show that files were deleted from opera. However, when you open opera, the internet history is still there.
Upgraded to trial pro version.
Even though free ccleaner and proccleaner show that files were deleted from opera; only with the pro version is the internet history removed from opera.
Using win 10, 64bit.