Don't copy timesheet and project children as link between both will be lost

review1042002
(transplanted from 0fc901cb8a2b38c573028f14d0bd0dbbc24bfdfa)

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extra : transplant_source : %0F%C9%01%CB%8A%2B8%C5s%02%8F%14%D0%BD%0D%BB%C2K%FD%FA