checks for importing exchange rates

app/Import/Transformer/BaseTransformer.php

@@ -319,6 +319,21 @@ class BaseTransformer
         // return Number::parseFloat($number);
     }
 
+    /**
+     * @param $data
+     * @param $field
+     *
+     * @return float
+     */
+    public function getFloatOrOne($data, $field)
+    {
+        if (array_key_exists($field, $data)) 
+            return Number::parseStringFloat($data[$field]) > 0 ? Number::parseStringFloat($data[$field]) : 1;
+ 
+        return 1;    
+
+    }
+
     /**
      * @param $name
      *

app/Import/Transformer/Csv/InvoiceTransformer.php

@@ -114,7 +114,7 @@ class InvoiceTransformer extends BaseTransformer
                 $invoice_data,
                 'invoice.custom_surcharge4'
             ),
-            'exchange_rate' => $this->getFloat(
+            'exchange_rate' => $this->getFloatOrOne(
                 $invoice_data,
                 'invoice.exchange_rate'
             ),

app/Import/Transformer/Csv/QuoteTransformer.php

@@ -114,7 +114,7 @@ class QuoteTransformer extends BaseTransformer
                 $quote_data,
                 'quote.custom_surcharge4'
             ),
-            'exchange_rate' => $this->getFloat(
+            'exchange_rate' => $this->getFloatOrOne(
                 $quote_data,
                 'quote.exchange_rate'
             ),