I save strategies in the Strategies To Optimize folder of Optimizer and every time I start StrategyQuant after it has been turned off I cannot find the saved strategies. They have been deleted. I have to save them on my computer if I want to keep them for optimization.
Just a heads up there are so many ways strategies can be deleted either by bug or by accident, it is highly recommended to utilize a third party backup system and don't forget to turn on auto-sync.