Booyah to you two LOL.
To everyone without all EP's. I uninstalled everything but base game, reinstalled UC and was able to select save file in main menu and load the world surprisingly fast.
World is filled with oak trees, it looks like all trees and plants are replaced with them, even pink hydrangeas. Also, 2 rabbitholes are gone - movie set and equestrian center-as expected, Sims are not looking the way anyone intended, and even some terrain paints are gone from lots. Bars are mostly empty missing most of the stuff, and all community lots not available for base game are marked as Community lots /No Visitors Allowed. Shells and most of the features are still there.
There is one game breaking problem - bridge is gone and no access to other side of the river (even if it is counted as base game content in CAW
!), and another possible routing problem since water tower in front of the dive bar is replaced with huge concrete one covering half of the road.
Can someone please tell me if they successfully loaded saved file without some EP's?