Is Crm web api $expand entities/relationships cached in browser

Hi,

I have an web api which has $expand which retrieves values from more than 3 relationships. Now i have changed some boolean value in one of entity(or relationsips) included in $expand. But to my surprise, it web api call returns the old value.

But when i run the web api in new incognito/private brwosing window, the webapi call returns the correct and updated value. Does CRm WEB API cache some values by default. Please help.

Thanks
Goutham