Eric,
The differences you are seeing is caused by the way the Datasheet Module's coding structure formats that "Available Fields List". It shows all fields in the Doc_Reg table (this is for Datasheet related data only), next depending on what datasheet your using (built per tag_type) will depend on its Tag Register table next shown. In this instance it's tag_type is AT_INST so the Tag Register table will be the INSTR table. Next will be the AT_View linked to the Tag_Type for this Datasheet which is AT_INST. To stop duplication the coding will remove available fields that are already shown in the INSTR or DOC_REG table or Vice Versa. Next come the Project tables data and the finally I believe the Project.ini values.
How to add new fields to link a cell to?
You will need to add the new fields to the AT_INST view in Project Administrator. These new fields will be available in the AT_INST view "Available Fields List" in the DataSheet's module.
I hope this answers your questions. If not please reply back and we can continue our discussions.
Thank you,
Brandon Moberg