After the merger and transferring our accounts from TDAmeritrade to the Schwab account equivalents, all of the years of transaction history seems to have migrated properly, but the portfolio value history begins from the day of the transfer. The graph essentially shows the portfolio was at zero until the transfer date, September 5th. It appears the historical daily stock closing values on which the portfolio values are calculated just is missing. Is there a way to restore the stock history files?