i need to do a migration and i go to Tools then Export.

Hi guys, i need to do a migration and i go to Tools then Export. I select all the checkbox for the export. When i import to my new site, most of it are imported but only Slider, Portfolios, Designers and Home Portfolios does not imported and are totally blank. As there are lots of sites in these, it is not wise it do it manually.

Anyone with experience in this please advice. Thanks.