In order to change the preferences (eg which periods are locked off) all the windows need to be shut down.
This is not helpful when you are 30 lines into a General Journal and go to save it only to find out that the period has been locked. You used to be able to go into the preferences - change them and then save the transaction - now you just lose it. or you have to post it to an incorrect date - change the preferences - find the transaction again and then change the date.
"CHANGE PREFERENCES WITHOUT SHUTTING DOWN ALL WINDOWS"
We're very pleased to say that we've now implemented this feature in our 2015.4 update. You can now change preferences without closing open Windows. You can see all the fantastic improvements we've made via our AccountRight Blog.