In the current scenario: lightly discharged battery, and suspect health, the long Absorb Time may overcharge the healthier cells; and if there are shorted/sulfated cells, cause heat buildup in those blocks.
Normally using Automatic Charge Termination Control would control the absorb time dynamically, however it may not work as expected with degraded cells.
Since the battery, as exists currently, is staying in service, a shorter Absorb Time will reduce the stress on the battery overall.