CCM reporting continuously INFO scd.compatibility.migration.MigrateSourceCodeData

After migration of RTC from V5.0.2 to V6.0.6.1, generating index I started WAS, jts and ccm, I run diagnostics there is no errors, but ccm reports too many, and continuously info logs like:

2020-05-25 17:56:47,460 [                    Thread-124]  INFO .scd.compatibility.migration.MigrateSourceCodeData  - start processing component 10 of 111
2020-05-25 17:56:47,466 [                    Thread-124]  INFO .scd.compatibility.migration.MigrateSourceCodeData  - Migrating JFS Fragment (number 1 of 1)
2020-05-25 17:56:47,654 [                    Thread-124]  INFO .scd.compatibility.migration.MigrateSourceCodeData  - migrated fragment was composed of 26 entries.  Created 26 FSCD with 117 dependencies in 174ms. 0 FSCD failed to migrate, 0 were skipped.
2020-05-25 17:56:48,168 [                    Thread-124]  INFO .scd.compatibility.migration.MigrateSourceCodeData  - start processing component 11 of 111
2020-05-25 17:56:48,174 [                    Thread-124]  INFO .scd.compatibility.migration.MigrateSourceCodeData  - Migrating JFS Fragment (number 1 of 2)
2020-05-25 17:56:54,775 [                    Thread-124]  INFO .scd.compatibility.migration.MigrateSourceCodeData  - migrated fragment was composed of 1000 entries.  Created 1000 FSCD with 3506 dependencies in 6522ms. 0 FSCD failed to migrate, 0 were skipped.

What does it due to?

How to avoid ir?

thanks