BobKamman
Level 15

All I know is what I read in Pub 537

If you sell property for which you claimed or could have claimed a depreciation deduction,
you must report any depreciation recapture income in the year of sale, whether or not an installment payment was received that year. Figure your depreciation recapture income (including the section 179 deduction and the section 179A deduction recapture) in Part III of Form 4797. Report the recapture income in Part II of Form 4797 as ordinary income in the year of sale. The recapture income is also included in Part I of Form 6252. However, the gain equal to the recapture income is reported in full in the year of the sale. Only the gain greater than the recapture income is reported on the installment method.