diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
index d24698b9..902ecea1 100644
--- a/CONTRIBUTORS.md
+++ b/CONTRIBUTORS.md
@@ -105,9 +105,12 @@ Fixed channel timelines so refreshed thread parents remain visible after direct
 ### [@thomasmaerz](https://github.com/thomasmaerz)
 Fixed database dedupe joins for non-null keys, restoring fast dedupe previews on archives with many duplicate channel users.
 
+### [@beeckrumi0000](https://github.com/beeckrumi0000) - ulises.millan
+Fixed `resume -refresh` so `-member-only` also filters newly discovered channels.
+
 ---
 
-**Total Contributors**: 33
+**Total Contributors**: 34
 
 This list is sorted by number of contributions. Every contribution, no matter how small, helps make Slackdump better for everyone!
 
diff --git a/cmd/slackdump/internal/man/assets/changelog.md b/cmd/slackdump/internal/man/assets/changelog.md
index 1db055f8..8c9c244e 100644
--- a/cmd/slackdump/internal/man/assets/changelog.md
+++ b/cmd/slackdump/internal/man/assets/changelog.md
@@ -4,6 +4,13 @@
 
 ### Bug Fixes
 
+- `slackdump resume -refresh -member-only` now skips newly discovered public
+  channels that the current user has not joined (#758). Channels already in
+  the resume list are still processed.
+- Fixed MCP archive switching so `load_source` waits for active reads before
+  closing the previous archive (#753). Failed opens or canceled waits leave
+  the previous archive active, queued reads can be canceled, and the server
+  closes the active archive at shutdown.
 - Fix slow database deduplication on large channels (#750), including cleanup
   after `resume -dedupe`. Existing archives automatically build a message index
   on first open after upgrading; this can take extra time and disk space.
diff --git a/cmd/slackdump/internal/mcp/assets/mcp.md b/cmd/slackdump/internal/mcp/assets/mcp.md
index 40fb5cc1..98ffcb53 100644
--- a/cmd/slackdump/internal/mcp/assets/mcp.md
+++ b/cmd/slackdump/internal/mcp/assets/mcp.md
@@ -267,7 +267,9 @@ load_source(path="/path/to/another/archive.db")
 ```
 
 `load_source` also works when the server was started with an initial archive —
-it closes the current one and opens the new one.
+it opens the new archive and waits for active reads before replacing the
+current one. If opening fails or the wait is canceled, the current archive
+remains active.
 
 ## Integrating with Claude Desktop
 
diff --git a/cmd/slackdump/internal/resume/assets/resume.md b/cmd/slackdump/internal/resume/assets/resume.md
index d5f914d7..2e14f518 100644
--- a/cmd/slackdump/internal/resume/assets/resume.md
+++ b/cmd/slackdump/internal/resume/assets/resume.md
@@ -34,6 +34,19 @@ steps:
    slackdump convert -format <your-format> slackdump_20241231_150405
    ```
 
+### Discovering new channels.
+
+Use `-refresh` to discover additional channels while resuming an existing
+archive. Add `-member-only` to skip newly discovered public channels that you
+have not joined:
+
+```plaintext
+slackdump resume -refresh -member-only <archive>
+```
+
+The membership filter applies to newly discovered channels. Channels already
+in the resume list are still processed, even if you are no longer a member.
+
 ### Deduplicating resume overlap.
 
 Resume uses a lookback window to avoid missing edits, replies, and other
diff --git a/internal/chunk/backend/dbase/dbase.go b/internal/chunk/backend/dbase/dbase.go
index 372fae4c..36e1fb12 100644
--- a/internal/chunk/backend/dbase/dbase.go
+++ b/internal/chunk/backend/dbase/dbase.go
@@ -83,6 +83,9 @@ func WithVerbose(v bool) Option {
 	}
 }
 
+// WithOnlyNewOrChangedUsers instructs to insert the user in consequent session
+// only in case if it is a new user or the user details were updated. Default -
+// to insert the user regardless.
 func WithOnlyNewOrChangedUsers(v bool) Option {
 	return func(o *options) {
 		o.onlyNewOrChangedUsers = v