Recently I've had tracked time disappearing from tasks. I had 3 hours allocated for a task and had previously used about 2 and a half hours. After working on my task again, I noticed on entering the Effort window to enter notes that the most recent effort recorded was the only one there. The previous 2 and a half hours had disappeared.
I know this has happened on at least one other occasion and I don't recall having done anything different to normal.
Usually this isn't an issue because I quote set prices and only use the program to monitor my time to gauge how accurate my quotes are - but I do have some retainer clients billed on an hourly rate where I need to know exactly how much time I've spent on their projects so I can accurately bill them.
Any ideas as to why this data is disappearing?