HI Guys,
I sent a RFE reply which the USCIS rcd on the 7th Dec. Saw a LUD on 8th on my I-485 and not on my I-140. Is this normal? Why is my I-485 being updated after RFE response?

I saw LUD on 10th and today the 11th on my I-485. Nothing on my spouse's I-485. Is this normal. Do these LUDs mean anything. I am a novice in this area. GURUS pl. enlighten me.

I sent a RFE reply which the USCIS rcd on the 7th Dec. Saw a LUD on 8th on my I-485 and not on my I-140. Is this normal? Why is my I-485 being updated after RFE response?
I saw LUD on 10th and today the 11th on my I-485. Nothing on my spouse's I-485. Is this normal. Do these LUDs mean anything. I am a novice in this area. GURUS pl. enlighten me.