You should submit an amended "Statement of Income and Tax Filing Status" to your agency under the one-year process whenever the information on it changes, and you should continue to amend it until you have received the last W-2 from your agency in connection with a specific relocation. In particular, you should file an amended version of this statement whenever:
41 C.F.R. §302-17.52
Note to § 302-17.52: Your agency will not be able to use your original or amended "Statement of Income and Tax Filing Status" if you file it after the cut-off date established by your agency in accordance with § 302-17.54(b).