Well, yes and no. The attrition due to retirements tends to concentrate in International. With the exception of IMA, there haven't been that many "big" proffers. As the International people retire they haven't been "replaced"--which suggests that International has been carrying an overage. Reducing the International corps by 100 doesn't necessarily mean that a Domestic overage of 100 has been "taken care of."
Also, total attrition (quit, died, retired, and got fired) for last year, according to the Flight Service website, was 591 flight attendants. So far, for this year through October the total is 501. How many furloughees have been recalled in the past year? This is not "eating into the overage."
Also, remember that the way Flight Service counts attrition doesn't necessarily mean permanent separation from the company. If someone is fired this month and leaves the payroll, that ups this month's (and the year's) attrition by one. If the person gets their job back in arbitration next month, they do not reduce the annual attrition by one. And, as several of the former TW flight attendants have pointed out, the company also counts furloughs as attrition because the person leaves the payroll. However, they really shouldn't be counted as attrition until their 5 years is up because they could be recalled to the payroll at any time.