Fixed joint doesn't work after gameobject disabled and enabled

1. I took 2 gameobjects and added rigidbody to it.

2. Added fixedjoint to one gameobject and put connected body another gameobject.

3. Both game object move together if I add force to one gameobject.

4. I disabled connected body gameobject for a moment and then enabled it. 5.gameobjects are not behaving as per the property of fixed joint. They move separately like there is no joint.

Please help me with this problem