diff --git a/FORK.md b/FORK.md
index ac69352f..62e8f137 100644
--- a/FORK.md
+++ b/FORK.md
@@ -50,7 +50,7 @@ point, not ours. **Our real patch is 32 files.**
 
 ### How the split was verified
 
-The series was not hand-sorted. `/root/rcll-split.py` decomposes the
+The series was not hand-sorted. [`scripts/rcll-split.py`](scripts/rcll-split.py) decomposes the
 base→snapshot diff to **line granularity** — hunks are too coarse, because the
 two largest are single appended blocks containing more than one feature — then
 classifies every edit and materialises each stage by content.
diff --git a/mcp-server/README.md b/mcp-server/README.md
index cbb9d070..493d1083 100644
--- a/mcp-server/README.md
+++ b/mcp-server/README.md
@@ -48,7 +48,17 @@ Add to `~/.claude/mcp.json`:
 | Variable | Default | Description |
 |----------|---------|-------------|
 | `RCLL_URL` | `http://127.0.0.1:5100` | RCLL backend base URL |
-| `RCLL_BANK` | `mempalace-main` | Default memory bank ID. The default keeps the pre-rebrand value on purpose, so an install that never set it stays on the same bank after upgrading. Set it explicitly. |
+| `RCLL_BANK` | `rcll-main` | Default memory bank ID. Set it explicitly. |
+
+### Migrating from `hindsight-mempalace-mcp`
+
+That package defaulted to bank `mempalace-main`. `rcll-mcp` defaults to `rcll-main`,
+so an install that never set the variable would open a different, empty bank — which
+reads as "the update erased my memory". It does not: the old bank is still there.
+
+Set `RCLL_BANK=mempalace-main` to keep reading it, or move the contents into a new
+bank first. When `RCLL_BANK` and `MEMPALACE_BANK` are both unset, the server prints
+which bank it defaulted to on stderr rather than picking one silently.
 
 ### Deprecated (still read, with a notice on stderr)
 
diff --git a/mcp-server/server.js b/mcp-server/server.js
index 83cb5107..8f4e7c6f 100644
--- a/mcp-server/server.js
+++ b/mcp-server/server.js
@@ -53,12 +53,20 @@ function envWithFallback(current, legacy) {
 
 const RCLL_URL = envWithFallback(...LEGACY_ENV[0]) || 'http://127.0.0.1:5100';
 const RCLL_BASE = `${RCLL_URL}/v1/default/banks`;
-// The default bank literal deliberately stays 'mempalace-main': that is the value
-// hindsight-mempalace-mcp@1.0.0 shipped with, so anyone who never set the env var is
-// already living in that bank. Renaming the default would silently drop them into an
-// empty bank on upgrade and read as "the update erased my memory".
-// Drop this at the 60-day mark, together with the legacy image alias.
-const DEFAULT_BANK = envWithFallback(...LEGACY_ENV[1]) || 'mempalace-main';
+// The default bank is 'rcll-main'. The pre-rebrand package
+// hindsight-mempalace-mcp@1.0.0 defaulted to 'mempalace-main', so an install that
+// never set the env var and switches packages would land in a different, empty bank.
+// That reads as "the update erased my memory", so we say it out loud instead of
+// guessing: the legacy env var is still honoured, and defaulting is announced.
+const LEGACY_DEFAULT_BANK = 'mempalace-main';
+const DEFAULT_BANK = envWithFallback(...LEGACY_ENV[1]) || 'rcll-main';
+if (!process.env.RCLL_BANK && !process.env.MEMPALACE_BANK) {
+  console.error(
+    `rcll-mcp: RCLL_BANK is unset, using '${DEFAULT_BANK}'. ` +
+      `Coming from hindsight-mempalace-mcp? Your memory is in '${LEGACY_DEFAULT_BANK}' — ` +
+      `set RCLL_BANK=${LEGACY_DEFAULT_BANK} to keep reading it.`
+  );
+}
 
 // --- RCLL HTTP client ---
 
diff --git a/rcll-split.py b/scripts/rcll-split.py
similarity index 100%
rename from rcll-split.py
rename to scripts/rcll-split.py
diff --git a/server.json b/server.json
index 898e0987..ff357380 100644
--- a/server.json
+++ b/server.json
@@ -27,9 +27,9 @@
         },
         {
           "name": "RCLL_BANK",
-          "description": "Default memory bank ID for retain/recall. The pre-rebrand variable MEMPALACE_BANK is still read as a fallback; see mcp-server/README.md.",
+          "description": "Default memory bank ID for retain/recall. The pre-rebrand variable MEMPALACE_BANK is still read as a fallback. Migrating from hindsight-mempalace-mcp? Set this to mempalace-main to keep reading your existing bank; see mcp-server/README.md.",
           "isRequired": false,
-          "default": "mempalace-main"
+          "default": "rcll-main"
         }
       ]
     }