What does de-partition mean in Abinitio?

Whenever we are getting a huge serial file to make the process into parallel we were using a partition components and the parallelism can work on depends of the mfs file system so if my requirement is again to create a load ready file or the landed file into a serial for the processing of the next loading up into a staging tables or it could be a target tables or it could be a processing with the other graphs but my requirement is to create a serial file then we have to use a deportation component then only the flows which are running on the parallel will come into a serial by using any of these components concatenation gather match and interleave but everything will do the same a serial kind of um file will get created but the behavior is so different for each of the component it depends on the requirement we have to use which component to be used.