yes thanks and I eliminated everything previously that it asked. but it still shows the "start no earlier than" constraints in the information column. there is a lot of activities with such constaints, which had mostly happened when i was bringing the activities to current date in the previous job. how can i eliminate them alltogether, is there a shortcut or i must eliminate them one by one?

Also on the fixed cost column, although the previous values are deleted now, i still see the coloring of some cells that i had done previously. there is again quite a lot of them. is there a shortcut way to make them all automatic color backghround which is white ? or i have to do one by one?