fix issue with filter conditions udpate

app/src/main/java/net/pokeranalytics/android/model/realm/Filter.kt

@@ -65,7 +65,7 @@ open class Filter : RealmObject() {
 		private set
 
 	fun createOrUpdateFilterConditions(filterConditionRows: ArrayList<FilterElementRow>) {
-		filterConditions.clear()
+        val casted = arrayListOf<FilterElementRow>()
         filterConditionRows
 			.map {
 				it.filterName
@@ -77,9 +77,13 @@ open class Filter : RealmObject() {
 						it.filterName == filterName
 					}
 					.apply {
-                        val casted = arrayListOf<FilterElementRow>()
                         casted.addAll(this)
-                        filterConditions.add(FilterCondition(casted))
+                        val newFilterCondition = FilterCondition(casted)
+                        val previousCondition = filterConditions.filter {
+                            it.sectionName == newFilterCondition.filterName
+                        }
+                        filterConditions.removeAll(previousCondition)
+                        filterConditions.add(newFilterCondition)
                     }
 			}
 	}