Tracking CGT Share Sales to avoid double taxation

Hi guys, Would you consider a feature that allows a user to mark share parcels as "sold" for the purposes of tracking CGT paid on those sales? The scenario I'm trying to solve is like this (for example): I sold a small parcel of shares this FY and used the Navexa CGT report to help determine my tax obligations. So I've now paid CGT on those share sales this year, based on the "minimize gain" method. I've continued to buy new parcels of the same asset during this time and into the future. Fast forward 10 years: I sell more shares of this asset, and use the Navexa CGT report to help determine my tax obligations. How do I determine which historical shares have already been "sold" and are therefore not available to use as a cost baseto calculate CGT in the past? My assumption is that Navexa's "minimise gain" method will pick the most efficient shares to nominate as the cost base, but it has no concept of which historical shares have already been used to pay previous CGT bills. Please correct me if my assumption is wrong and thanks in advance for your consideration. Regards, Tim