Foreign bank account opening date

Hi. This is regarding updating schedule FA in ITR2. I opened my salary bank account more than 15 years back when I was deputed for an onsite assignment and after I returned in 2010, this went into dormant state for many years till I was placed abroad on an assignement and reactivated it again in 2019. A new debit card and security pin was issued to me for online banking.  I checked with the bank for older statements and documents before 2019 but they mentioned they dont retain the data for more than 6 years and those are not available now.
My dilemma is whether to put 2019 as the account opening date as that is when I have all the data and reactivated it from dormant state. Please suggest.