AFAIK, electronic ballasts of recent manufacture do not have a memory. If you want to be sure, contact the ballast manufacturer and ask.
I asked this question of Advance ballasts about 3 or 4 years ago on a job I had. The building would have 277 volt lighting circuits, but our temporary power was only 120 volts. Used the temporary to run some of the lights, everything worked fine when 277 was finally available.
