If your patron was fastidious, IRS requires all Forms 8606 to be kept forever, which implies there is a copy or copies outside the folder of copies of past taxk...
"show that the account was funded"By "account" in your original post, I take it to mean the IRA account.In the absence of Form 8606, IRS will accept other suita...
1040-X replaces 1040 and becomes your new tax return.Always print a copy of your completed tax return for your records, and review it carefully before e-Filing....