LOA 26 3-B-3 is referring to future furlough longevity, see ALPA Comm - LUAL ALPA Q&A #6 , question 6. LOA 25 is pretty clear that pay credit for furlough longevity back to a minimum of 5/7/08 occurs immediately upon date of signing (yesterday). Reference LOA 25 paragraph 4 and ALPA Comm LUAL ALPA Q & A #5 , question #4.