OK I think i may have sorted it.

When i select say Blackhole and make an alteration to its preset settings it works fine.

Now if i choose a different preset still in Blackhole it asks do i want to save the changes Yes/No.

But if i choose Blackhole and make alterations then instead of choosing another preset in Blackhole i click on

Algorithms to go to a different one Blackhole is still present until i choose an Algorithm and select a preset

thats why i dont get the message asking if i want to save it because i am no longer in Blackhole.

Blackhole is only mentioned for reference it doesnt matter which Algorithm/Preset i use if i do the above

the outcome will always be the same.

Gosh i hope i have explained it clearly enough.

Alan