Custom Fields - Equipment Master Generic extractor

Dear BW ers,

I have custom fields in the equipment master extractor. We extract data onto BW as Pseudo delta based on 'changed date' field. Our business keeps chaning values for the custom fields and this is not being captured as delta since Custom fields do not contribute to it. We do a Full load which takes nearly 8-10 hours to complete.

Is there any other way, I can change the user exit code in order to make the Custom fields delta recognizable?

I read some blogs about it but it was for LO extractors.

Awaiting your inputs,

Thanks.