Cpm_for_cpd log during the import indicates that full sync has failed:
DATE TIME,PID ERROR utils.runtime.CpAssert$DefaultAssertionErrorHandler [qtp-758318607-168]: AssertionError has been caught: failed loading data of full sync!
failed loading data of full sync!
Cause
Full sync between the secondary MDS or MLM fails with the primary MDS during the import process.