8peiced,
"At the time of LOW FUEL Warnings, there would be no F PUMP FWD or AFT cautions as the transfer pumps had been switched off whilst dry running iaw normal procedure.*"
That is incorrect. If the pumps have been switched off after the appearance of the caption due to a run dry event, then the caption will remain lit because the pumps are off. If the captions are not lit due to run dry and the pilot switches them off, there will be a 3 minute delay before the captions appear.
Only re-immersion in fuel and putting the pumps on will cause the captions to clear.