Why does EPF need to dispose its assets to get cash upfront?

Recently the rebel government of Muhyiddin Yassin had agreed to allow depositors to withdraw their savings in the Account 1 partially from the Employees' Provident Fund (EPF) after much pressure from both side of the political divide during the ongoing parliamentary sitting which is now debating on the allocations for the Budget 2021. However, what came to a grave surprise is, the EPF made a public statement informing the public that they need to liquidate much of its assets and rebalance their investment portfolios in order to obtain cash upfront to facilitate withdrawals from depositors. Unfortunately it comes into a big question mark here, why does EPF need to dispose off its assets in order to obtain the much needed cash in order to fund the depositors' withdrawal? Where has the EPF's cash reserves or reserve funds gone to? How does EPF actually manage the entire portfolios in the group which serves as a retirement fund for majority of the workers in this country? Liqui...