Changes made in sculpt mode disappear in object mode

Hey guys. Hope y’all good, I happen to be working on some scene that has got aterrain with. So everytym I enter sculpt mode en sculpt the terrain, making changes to it. When I head back to object mode , all the changes made in sculpt mode disappear, and on switching back to sculpt mode the changes made reflect back. I am really confused .please help. Thanks

Increase the view levels on the multiresolution modifier

Thanks it worked. I had to increase the preview value of the multiraise modifier to 1. Initially I had it on zero