Data protection in FDM

Question

We're trying to set up data protection so that FDM doesn't overwrite manual input schedules but only replaces GL data. We've set up a C1 member called "Data_GL" to receive this data. The FDM manual reads as follows but offers no clues on how to set and use the settings and functionality. Any help on making this work will be gratefully received.
Best,
John
From the FDM manual, Configuring Integration Settings:
* Data Protection Switch—Enables FDM to protect data in the target system from being overwritten during data imports based on a specified protection value. Use this when data is entered into the target system through a method other than FDM. <Selected "Yes">
* Protection Value 1—Stores the value used with the Data Protection Switch. It is the value that is not to be overwritten. Selected "Data_GL" - C1 member for storing GL data>
* Protection Operator—Stores an operator (= or <>) to determine if items equal to the value stored in the Protection Value 1 are to be protected, or if items that do not equal the value stored in the Protection Value 1 are to be protected.
<Selected "not equal signs" ... that is, protect everything that is not "Data_GL">

Answer 1

I too have found the FDM manual does not provide detail on how to set up Data Protection functionality.
Any tips?
James