This issue is definitely fixed since build 3.0.6-169. Further tests in comparison with the faulty versions showed that the fix of Task 69 (from 09/24/2008) in 3.0.6-132 was the root cause.
The issue which was reported by Ralph was carried over from the faulty beta version with the saved .not file. It really needs to be fixed by hand deleting the lyrics multiple times (4, 16, 64..) based on how many copying happened. I am sorry that the incomplete fix of Task 69 caused this issue. However, Task 69 which was open for ~10 years is fixed now, finally. And, this issue clearly shows the value of the beta testing for us.
Thank you very much
Reinhold