A new attribute in Spectrum was created on the IPDomains named PCGUID.
When the upgrade is done, a full Sync is run. Spectrum tries comparing the PCGUID and performs the sync. The IPdomains in 10.3.2 do not have PCGUID and comparison fails. Since it's a full sync, CAPC marks all entries in dst_domain table(on CAPC side) for spectrum with UpdatedOn=0, and then update UpdatedOn=NOW for ip domains sent from spectrum. Since Spectrum is not sending any because it's a new/blank attribute, CAPC deletes all dst_domain entries from Spectrum, so Spectrum recreates them with all SS.
Release : 10.4.1
Component : Spectrum Core / SpectroSERVER
Before upgrading, change the IPDomain searches to search for Model Handle greater than <the landscape handle> and less than <the last entry in the landscape handle> and add all SpectroSERVERs.
For instance, if landscape 1 is 0x100000, and you want a custom IPDomain to only contain landscape 1, then set the search to be:
Model_Handle greater than 0x100000
Model_Handle less than 0x1ffffff