Managing Multiple Portfolios

One of the issues with having multiple Portfolios is the difficulty in moving money/units between them e.g.:

  1. If you sell units in one Portfolio then you can re-invest it straight away in the same Portfolio, but you can’t move the cash into another Portfolio until the sale has settled.
  2. You can’t re-organise your Portfolios e.g. move a fund (including the units held in that fund) from one Portfolio to another.

Has anyone found ways to get around these issues?