Hello RINGO STARR,
I saw your post here and wanted to say thank you for posting your question. Specifically, you said:
I would like to know if I can use some other method whereby I can either modify an existing record or save as a new record with the altered fields and existing fields.
So, I would suggest just making a copy of the record, modifying the necessary fields, and then saving the new record. Does this make sense? Will this work for your situation?
Please let me know if there is anything else I can do to help!