According to the memo, INS field offices and service centers must retain evidence of the dates on which immigrant visa petitions or adjustment of status applications were mailed as part of the record of proceedings for all such petitions and applications they received from May 1, 2001, through May 3, 2001. The record of proceedings must include the original postmarked envelope or a copy of it, a private mail service invoice, or a metered envelope. All applications considered filed on or before the Apr. 30, 2001, sunset date that are received on or after May 1, 2001, must bear a stamp stating "Filed Prior to 245(i) Sunset."
(nilc.org)
Also my approved I-130 (NOA) stated that I could apply 245i