diff --git a/files/test_config.ini b/files/test_config.ini
index 6b464889..11d44ebf 100644
--- a/files/test_config.ini
+++ b/files/test_config.ini
@@ -71,3 +71,18 @@ REPL_DB_ALIAS = db_repl_alias
 #
 JOURNAL_SUB_DIR = repl_journal 
 ARCHIVE_SUB_DIR = repl_archive
+
+# Replication tests which do some DML (i.e. changes not only metadata but data itself) had a problem:
+# it was necessary run SWEEP after test completion, both for DB_MAIN and DB_REPL. Otherwise next runs
+# of this test (or other tests related to replication) caused:
+#     "ERROR: Record format with length <NNN> is not found for table TEST"
+# (discussed with dimitr, letters since 04-aug-2021)
+# This problem existed during 2021...2022 and then was fixed:
+#     * for FB 4.x: 26-jan-2023, commit 2ed48a62c60c029cd8cb2b0c914f23e1cb56580a
+#     * for FB 5.x: 20-apr-2023, commit 5af209a952bd2ec3723d2c788f2defa6b740ff69
+# (log message: 'Avoid random generation of field IDs, respect the user-specified order instead').
+# If we want to check these two commits (making SKIP sweep) in all replication tests then set parameter
+# RUN_SWEEP_AT_END to zero. Otherwise (if regression occurs and some of tests again fail with message
+# related to record format) set RUN_SWEEP_AT_END to 1.
+#
+RUN_SWEEP_AT_END = 0