I would like to know that in system which have spring support and need hydrotest case, I assign spring support as rigid for hydrotest, right?

and then I test program by remove spring and put restrain +Y and compare load on the same point and near point are large different result????

Which correct?
Please kind suggest...
Thanksssssss

You shouldn't have to do that.

If the input was all setup the first time you attempted an analysis, CAESAR II should setup the HYD (hydrotest case) with the springs locked. If you added the hydrotest pressure and setup the load case yourself, go to the "load case" options tab (in the Static Load Case Editor), scroll to the right, and change the spring stiffness setting to "rigid".