diff --git a/Backend/Controllers/BuildInfoController.cs b/Backend/Controllers/BuildInfoController.cs
index 94bde0a..9fc3a02 100644
--- a/Backend/Controllers/BuildInfoController.cs
+++ b/Backend/Controllers/BuildInfoController.cs
@@ -123,7 +123,16 @@ namespace Backend.Controllers
                             { "@urn_3D", post.urn_3D},
                             { "@created_by", myUserInfo.Userinfo_guid}
                         };
-                        await backendRepository.AddOneByCustomTable(building, "building");
+
+                        sWhere = $@"deleted = 1 AND building_tag = @Building_tag";
+                        buildInfos = await backendRepository.GetAllAsync<BuildInfo>("building", sWhere, new { building_tag = post.building_tag });
+                        if (buildInfos.Count == 0)
+                            await backendRepository.AddOneByCustomTable(building, "building");
+                        else
+                        {
+                            building.Add("@deleted", 0);
+                            await backendRepository.UpdateOneByCustomTable(building, "building", "building_tag='" + post.building_tag + "'");
+                        }
                     }
                     else
                     {
@@ -141,7 +150,16 @@ namespace Backend.Controllers
                             { "@extName_3D", post.extName_3D},
                             { "@created_by", myUserInfo.Userinfo_guid}
                         };
-                        await backendRepository.AddOneByCustomTable(building, "building");
+
+                        sWhere = $@"deleted = 1 AND building_tag = @Building_tag";
+                        buildInfos = await backendRepository.GetAllAsync<BuildInfo>("building", sWhere, new { building_tag = post.building_tag });
+                        if (buildInfos.Count == 0)
+                            await backendRepository.AddOneByCustomTable(building, "building");
+                        else
+                        {
+                            building.Add("@deleted", 0);
+                            await backendRepository.UpdateOneByCustomTable(building, "building", "building_tag='" + post.building_tag + "'");
+                        }
                     }
 
                     if (post.orgName_3D != null && post.extName_3D != null)
diff --git a/Backend/wwwroot/upload/build_map/24574086-ea17-4ccc-8f8c-54760999ef73.nwc b/Backend/wwwroot/upload/build_map/24574086-ea17-4ccc-8f8c-54760999ef73.nwc
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diff --git a/Backend/wwwroot/upload/build_map/685405b1-89b7-46a8-a8f2-cb0a2343b392.nwc b/Backend/wwwroot/upload/build_map/685405b1-89b7-46a8-a8f2-cb0a2343b392.nwc
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index 0000000..5763191
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diff --git a/Backend/wwwroot/upload/build_map/72eecd08-02de-4925-84ef-89854ae75aac.nwc b/Backend/wwwroot/upload/build_map/72eecd08-02de-4925-84ef-89854ae75aac.nwc
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index 0000000..5763191
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diff --git a/Backend/wwwroot/upload/build_map/9740ccde-66d1-4809-8976-8f1a89f4d692.nwc b/Backend/wwwroot/upload/build_map/9740ccde-66d1-4809-8976-8f1a89f4d692.nwc
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diff --git a/Backend/wwwroot/upload/build_map/f171145a-5ef4-4ab0-b5cf-632857480ca0.nwc b/Backend/wwwroot/upload/build_map/f171145a-5ef4-4ab0-b5cf-632857480ca0.nwc
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index 0000000..5763191
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diff --git a/Frontend/_historyData.html b/Frontend/_historyData.html
index 5630030..a2543c1 100644
--- a/Frontend/_historyData.html
+++ b/Frontend/_historyData.html
@@ -86,6 +86,31 @@
         loadTable(null);
         $(`[onclick="setDateType('day', this)"]`).click();
         $(`[onclick="setDateType('today', this)"]`).click();
+
+        onEvent('change', '#startdate', function () {
+            let today = displayDate(new Date(Date.now()), 'date').replaceAll('/', '-');
+			let ytd = displayDate(new Date(new Date().setDate(new Date(Date.now()).getDate() - 1)), 'date').replaceAll('/', '-');
+            console.log(today);
+			console.log(ytd);
+            if ($(this).val() == today) {
+                $(`[onclick="setDateType('today', this)"]`).removeClass('btn-secondary');
+                $(`[onclick="setDateType('today', this)"]`).addClass('btn-dark');
+				$(`[onclick="setDateType('ytd', this)"]`).addClass('btn-secondary');
+				$(`[onclick="setDateType('ytd', this)"]`).removeClass('btn-dark');
+            }
+            else if ($(this).val() == ytd) {
+				$(`[onclick="setDateType('today', this)"]`).addClass('btn-secondary');
+				$(`[onclick="setDateType('today', this)"]`).removeClass('btn-dark');
+                $(`[onclick="setDateType('ytd', this)"]`).removeClass('btn-secondary');
+                $(`[onclick="setDateType('ytd', this)"]`).addClass('btn-dark');
+            }
+            else {
+				$(`[onclick="setDateType('today', this)"]`).addClass('btn-secondary');
+                $(`[onclick="setDateType('today', this)"]`).removeClass('btn-dark');
+				$(`[onclick="setDateType('ytd', this)"]`).addClass('btn-secondary');
+				$(`[onclick="setDateType('ytd', this)"]`).removClass('btn-dark');
+			}
+        });
     });
 
     function initList() {