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"Load Objects" will load all objects in the specified group using the specified load, regardless whether or not they were added in the current stage. "Load Objects If Added" will load only the objects in the specified group that were added in the current stage.
Why the stresses (shears and moments)
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disappear after changing section properties in staged construction?
See Staged Construction Operations
How can I extract creep,
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shrinkage and secondary prestress effect, respectively from the staged-construction analysis result?
For statically indeterminate structures, this is not possible since the shrinkage strains can cause stresses that affect the creep so they ca not be separated (unless the effect of shrinkage on creep is neglected).
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