Hi,
why are you collecting the 4200 objects in single TR? it's not better approach.
collect the some minimum objects under on TR.
step by step transport.
info areas
info objects catalogs
info objects
data source and info package
dso and info cube and transformations.
dtp.
queries.
collect the each data flow one single TR then move to QAS.
you can search on more doc available on Google about transportation.
please find the below doc.
SAP BI Objects Transportation simple way
Thanks,
Phani.