Updater doesn't update - is this correct behaviour?

[Graham Samuel]

Having updated a number of software packages on my Mac in the last couple of days, I note that a typical ‘check for updates’ sequence overwrites the previous version of the package: for LiveCode, this ain’t so, so one has to delete the older version oneself. I guess this is OK if it’s clearly explained to newbies, and there are obvious advantages if you want to go back to the earlier version, but personally I would like the choice to keep or replace when the installation starts. Anyone else think this is a good idea?

Graham