Year End Closing and Bank Reconciliations

SUGGESTED

I am helping a company that uses Sage 100 and they never closed the year for 2018 or 2019. The cash balance on my bank rec does not tie to the trial balance. I know I can do a hard close to fix that but should I continue doing bank recs in 2020 or wait until the prior years are closed so I can have a reconciled starting place?