Marketcrircle released yesterday a new update for Daylite. Version 3.10 includes various significant changes listed here

The feature we like the most is working offline with the Daylite database

I am very happy with the version 3.10, because I can now completely ignore the fact whether I am working online or offline before I start a business trip. Now I am always working offline and have the latest data anyway. Good Job, Marketcircle! – Frank Blome, CEO of ProjectWizards

For more details you can read the full release notes posted at marketcircle

To connect Merlin to Daylite and exchange activities between Merlin projects and the Daylite database you can use MerlinDayliteLink.