shadowing: Refine properties list (#1451)

Co-authored-by: Michele Cyran <[email protected]>

Author: paulohtb6

modules/deploy/pages/redpanda/manual/disaster-recovery/shadowing/setup.adoc

@@ -56,14 +56,13 @@ Shadowing replicates your topic data with complete fidelity, preserving all mess
 
 Consumer group data flows according to your group filters, replicating offsets and membership information for matched groups. ACLs replicate based on your security filters. Schema Registry data synchronizes schema definitions, versions, and compatibility settings.
 
-The following topic properties are always replicated:
+Partition count is always replicated to ensure the shadow topic matches the source topic's partition structure.
 
-* Partition count
-* `max.message.bytes`
-* `cleanup.policy`
-* `timestamp.type`
+=== Topic properties replication
 
-The following topic properties are never replicated:
+For topic properties, Redpanda follows these replication rules:
+
+**Never replicated:**
 
 * `redpanda.remote.readreplica`
 * `redpanda.remote.recovery`
@@ -72,8 +71,13 @@ The following topic properties are never replicated:
 * `redpanda.leaders.preference`
 * `redpanda.cloud_topic.enabled`
 
+**Always replicated:**
 
-By default, Redpanda always syncs the following topic properties:
+* `max.message.bytes`
+* `cleanup.policy`
+* `message.timestamp.type`
+
+**Always replicated, unless you set `exclude_default` to `true`:**
 
 * `compression.type`
 * `retention.bytes`
@@ -83,7 +87,9 @@ By default, Redpanda always syncs the following topic properties:
 * `min.compaction.lag.ms`
 * `max.compaction.lag.ms`
 
-Additional topic properties are replicated only when you explicitly specify them in your `synced_shadow_topic_properties` configuration. Set `exclude_default` to `true` if you want to sync only the properties listed in `synced_shadow_topic_properties`. The filtering system you configure determines the precise scope of replication across all components, allowing you to balance comprehensive disaster recovery with operational efficiency.
+To replicate additional topic properties, explicitly list them in `synced_shadow_topic_properties`.
+
+The filtering system you configure determines the precise scope of replication across all components, allowing you to balance comprehensive disaster recovery with operational efficiency.
 
 == Set filters