I tried this in practice account, it appears to work. Added MSFT and GOOGL with £2000 invested 50/50. Then removed GOOGL, adjusted allocation 100% to MSFT, hit rebalance.
The GOOGL position got sold out and the proceeds got invested in remaining allocation. Though there is some residual cash left in the pie and the %ge for remaining MSFT position was 100% which dosen’t total up.
The pie chart history showed no changes happened which is okay.
