Do I have to model the investments in WealthSolver again if I've already done it in IPS?

No, if you’ve modelled the client’s proposed investments in the IPS module prior to creating a proposal in WealthSolver, you’ll notice there is an additional option when you click “Add Investments” to select “Import from Portfolio Recommendations”. When you select this you’ll be given the option to select which account and investments you wish to import into the scenario.