If you have given proper resignation and apply to another central organisations plus provided same reason in the resignation application. If you got selected in the New Central govt dept then you will eligible for all benefits of your previous job. Only condition here is to apply through proper channel that resignation and new application in another department then it will be called as technical resignation otherwise it will called ad hoc basis.
For you current position is on probation period and none of increment pay scale is applicable .
Pay Protection, eligibility of past service for reckoning of the minimum period for grant of annual Increment.
If the pay fixed in the new post is less than your pay in the new most , then you will draw the presumptive pay of the post you holds substantively as defined in FR-9(24).