Will I be able to retain the current values of my books in the new automated value field. I do not want them to be overridden by a generated automatic value. It’s OK for new added books but not for those already in my collection.
No worries @dffordbooks, Your data that is in there will not be touched, nor overwritten with a value from Core.
Current Value field will be renamed to “My Value” and will be used “as the value” for your books whenever it is filled in.
So that should all be good for your situation 
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