From the Bundesarchiv: RL 2-II/393. Morgen-, Abendmeldungen, Nachträge, Nachträge zu Schadensmeldungen (Lw. FüSt. Ic Meldewesen). Bd 11: Ost, 5–29 April 1945.
25.4.45
IX. Flg.Korps: 21 Me 262 committed to support of the Army in the Dresden area.
26.4.45
IX. Flg.Korps: 4 Me 262 attack on vehicle columns in the area Cottbus - Jüterbog - Berlin. Good effects observed.
Supplementary for 26.4.45
IX. Flg.Korps: total effort 31 Me 262 against vehicle traffic and airfields in the area Cottbus - Bautzen - Dresden.
Results: 2 aircraft destroyed on the ground, 6 lorries destroyed, several vehicle columns effectively shot up.
Losses: personnel 1 dead, 1 missing; material 1 lost, 1 missing, 2 damaged
27.4.45
VIII. Flg.Korps: 8 Me 262 the Forst area.
And from ULTRA message CX/MSS/T535/10:
From Ic, No. 15055, to KONSUL ((Fliegerkorps IX)) Neubiberg late on 29/4:
Ic evening report 29/4
18 Silber recce, met recce, a/f occupation, engagement of ground targets Cottbus - Bautzen - Forst.
Results: 1 Yak-9 shot down, lorries thoroughly shot up including 74 with troops. 18 lorries destroyed including 6 with fuel.
Losses: 1 aircraft damaged.