Do we both consider Seismic and wind load in occasional load case?
Maybe you're in offshore area.

Anyhow, unless your Load cases is exactly same, your result will not be same. For example, compare the loadcase 2nd 2a), 2b) case 13. Sign of U3 is opposite, so the result will be different.

You can find information in Userguide, and some of the webinars.