From b082004318fe0a225b511bd7b926fe49f5723302 Mon Sep 17 00:00:00 2001
From: Alex <alexkwok@gmail.com>
Date: Mon, 16 Aug 2021 18:24:58 -0700
Subject: [PATCH] Keep order removals in Gemini order book deltas.

---
 src/ExchangeSharp/API/Exchanges/Gemini/ExchangeGeminiAPI.cs | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/src/ExchangeSharp/API/Exchanges/Gemini/ExchangeGeminiAPI.cs b/src/ExchangeSharp/API/Exchanges/Gemini/ExchangeGeminiAPI.cs
index d8ea7c83..b814caa8 100644
--- a/src/ExchangeSharp/API/Exchanges/Gemini/ExchangeGeminiAPI.cs
+++ b/src/ExchangeSharp/API/Exchanges/Gemini/ExchangeGeminiAPI.cs
@@ -642,10 +642,8 @@ params string[] marketSymbols
 							decimal amount = change[2].ConvertInvariant<decimal>();
 
 							SortedDictionary<decimal, ExchangeOrderPrice> dict = (sell ? book.Asks : book.Bids);
-							if (amount == 0m)
-								dict.Remove(price);
-							else
-								dict[price] = new ExchangeOrderPrice { Amount = amount, Price = price };
+
+							dict[price] = new ExchangeOrderPrice { Amount = amount, Price = price };
 						}
 					}