diff --git a/container/src/hledger-flow/accounts/changelly/changelly-shared.rules b/container/src/hledger-flow/accounts/changelly/changelly-shared.rules
index aeaa0c0..20364be 100644
--- a/container/src/hledger-flow/accounts/changelly/changelly-shared.rules
+++ b/container/src/hledger-flow/accounts/changelly/changelly-shared.rules
@@ -26,10 +26,19 @@ account3 assets:changelly:%subaccount:%currency_from
 amount3 -%currency_from_amount %currency_from @@ %currency_to_amount %currency_to
 account4 equity:changelly:%subaccount:deposit:%currency_to
 
-# NOTE: fee is not added to cost-basis here because currency_to_amount includes
-#   that automatically (it deducts the fee and computes into currency_to_amount).
-# NOTE: because the fee is considered a facilitation fee for the trade,
-#   *don't* use the provided %fee and instead use the adjust cost-basis instead.
+# NOTE:
+#
+#   - %fee is not added to cost-basis here because %currency_to_amount includes
+#     the fee (it adjusts the proceeds and computes into %currency_to_amount).
+#
+#   - %fee is considered a facilitation fee for the trade; so *don't* add to
+#     column (see above).
+#
+#   - %currency_from_amount is fully disposed (as the adjustment happens to
+#     %currency_to_amount).
+#
+#   - For details, see #51.
+#
 comment rate:%rate, destination:%destination, taxed_as:SELL
 comment2 %date +0000,SELL,changelly,%currency_from,%currency_from_amount,%currency_to,%currency_to_amount,,