Invoice copy is in the center in gst print format
diff --git a/erpnext/regional/print_format/gst_tax_invoice/gst_tax_invoice.json b/erpnext/regional/print_format/gst_tax_invoice/gst_tax_invoice.json
index 8d12336..b2deda9 100644
--- a/erpnext/regional/print_format/gst_tax_invoice/gst_tax_invoice.json
+++ b/erpnext/regional/print_format/gst_tax_invoice/gst_tax_invoice.json
@@ -7,10 +7,10 @@
  "docstatus": 0, 
  "doctype": "Print Format", 
  "font": "Default", 
- "format_data": "[{\"fieldname\": \"print_heading_template\", \"fieldtype\": \"Custom HTML\", \"options\": \"<div class=\\\"print-heading\\\">\\n\\t<h2>\\n\\t\\tSALES INVOICE<br>\\n\\t\\t<small>{{ doc.name }}</small>\\n\\t</h2>\\n</div>\\n<h2 class=\\\"text-right\\\">\\n\\t{% if doc.invoice_copy -%}\\n\\t\\t<small><i>({{ doc.invoice_copy }})</i></small>\\n\\t{% endif -%}\\n</h2>\"}, {\"fieldtype\": \"Section Break\", \"label\": \"\"}, {\"fieldtype\": \"Column Break\"}, {\"print_hide\": 0, \"fieldname\": \"company\", \"label\": \"Company\"}, {\"print_hide\": 0, \"fieldname\": \"company_address_display\", \"label\": \"Company Address\"}, {\"fieldtype\": \"Column Break\"}, {\"print_hide\": 0, \"fieldname\": \"posting_date\", \"label\": \"Date\"}, {\"print_hide\": 0, \"fieldname\": \"due_date\", \"label\": \"Payment Due Date\"}, {\"fieldtype\": \"Section Break\", \"label\": \"\"}, {\"fieldtype\": \"Column Break\"}, {\"print_hide\": 0, \"options\": \"<hr>\", \"fieldname\": \"_custom_html\", \"fieldtype\": \"HTML\", \"label\": \"Custom HTML\"}, {\"fieldtype\": \"Section Break\", \"label\": \"Address\"}, {\"fieldtype\": \"Column Break\"}, {\"print_hide\": 0, \"fieldname\": \"customer_name\", \"label\": \"Customer Name\"}, {\"print_hide\": 0, \"fieldname\": \"address_display\", \"label\": \"Address\"}, {\"print_hide\": 0, \"fieldname\": \"contact_display\", \"label\": \"Contact\"}, {\"fieldtype\": \"Column Break\"}, {\"print_hide\": 0, \"fieldname\": \"shipping_address\", \"label\": \"Shipping Address\"}, {\"fieldtype\": \"Section Break\", \"label\": \"\"}, {\"fieldtype\": \"Column Break\"}, {\"visible_columns\": [{\"print_hide\": 0, \"fieldname\": \"item_code\", \"print_width\": \"\"}, {\"print_hide\": 0, \"fieldname\": \"description\", \"print_width\": \"200px\"}, {\"print_hide\": 0, \"fieldname\": \"gst_hsn_code\", \"print_width\": \"\"}, {\"print_hide\": 0, \"fieldname\": \"qty\", \"print_width\": \"\"}, {\"print_hide\": 0, \"fieldname\": \"uom\", \"print_width\": \"\"}, {\"print_hide\": 0, \"fieldname\": \"rate\", \"print_width\": \"\"}, {\"print_hide\": 0, \"fieldname\": \"amount\", \"print_width\": \"\"}], \"print_hide\": 0, \"fieldname\": \"items\", \"label\": \"Items\"}, {\"fieldtype\": \"Section Break\", \"label\": \"\"}, {\"fieldtype\": \"Column Break\"}, {\"fieldtype\": \"Column Break\"}, {\"print_hide\": 0, \"fieldname\": \"total\", \"label\": \"Total\"}, {\"fieldtype\": \"Section Break\", \"label\": \"\"}, {\"fieldtype\": \"Column Break\"}, {\"visible_columns\": [{\"print_hide\": 0, \"fieldname\": \"description\", \"print_width\": \"300px\"}], \"print_hide\": 0, \"fieldname\": \"taxes\", \"label\": \"Sales Taxes and Charges\"}, {\"fieldtype\": \"Section Break\", \"label\": \"\"}, {\"fieldtype\": \"Column Break\"}, {\"fieldtype\": \"Column Break\"}, {\"print_hide\": 0, \"fieldname\": \"grand_total\", \"label\": \"Grand Total\"}, {\"print_hide\": 0, \"fieldname\": \"rounded_total\", \"label\": \"Rounded Total\"}, {\"print_hide\": 0, \"fieldname\": \"in_words\", \"label\": \"In Words\"}, {\"fieldtype\": \"Section Break\", \"label\": \"\"}, {\"fieldtype\": \"Column Break\"}, {\"print_hide\": 0, \"fieldname\": \"other_charges_calculation\", \"align\": \"left\", \"label\": \"Item-wise Tax Breakup\"}, {\"fieldtype\": \"Section Break\", \"label\": \"Terms\"}, {\"fieldtype\": \"Column Break\"}, {\"print_hide\": 0, \"fieldname\": \"terms\", \"label\": \"Terms and Conditions Details\"}]", 
+ "format_data": "[{\"fieldname\": \"print_heading_template\", \"fieldtype\": \"Custom HTML\", \"options\": \"<div class=\\\"print-heading\\\">\\n\\t<h2>\\n\\t\\tSALES INVOICE<br>\\n\\t\\t<small>{{ doc.name }}</small>\\n\\t</h2>\\n</div>\\n<h2 class=\\\"text-center\\\">\\n\\t{% if doc.invoice_copy -%}\\n\\t\\t<small>{{ doc.invoice_copy }}</small>\\n\\t{% endif -%}\\n</h2>\"}, {\"fieldtype\": \"Section Break\", \"label\": \"\"}, {\"fieldtype\": \"Column Break\"}, {\"print_hide\": 0, \"fieldname\": \"company\", \"label\": \"Company\"}, {\"print_hide\": 0, \"fieldname\": \"company_address_display\", \"label\": \"Company Address\"}, {\"fieldtype\": \"Column Break\"}, {\"print_hide\": 0, \"fieldname\": \"posting_date\", \"label\": \"Date\"}, {\"print_hide\": 0, \"fieldname\": \"due_date\", \"label\": \"Payment Due Date\"}, {\"fieldtype\": \"Section Break\", \"label\": \"\"}, {\"fieldtype\": \"Column Break\"}, {\"print_hide\": 0, \"options\": \"<hr>\", \"fieldname\": \"_custom_html\", \"fieldtype\": \"HTML\", \"label\": \"Custom HTML\"}, {\"fieldtype\": \"Section Break\", \"label\": \"Address\"}, {\"fieldtype\": \"Column Break\"}, {\"print_hide\": 0, \"fieldname\": \"customer_name\", \"label\": \"Customer Name\"}, {\"print_hide\": 0, \"fieldname\": \"address_display\", \"label\": \"Address\"}, {\"print_hide\": 0, \"fieldname\": \"contact_display\", \"label\": \"Contact\"}, {\"fieldtype\": \"Column Break\"}, {\"print_hide\": 0, \"fieldname\": \"shipping_address\", \"label\": \"Shipping Address\"}, {\"fieldtype\": \"Section Break\", \"label\": \"\"}, {\"fieldtype\": \"Column Break\"}, {\"visible_columns\": [{\"print_hide\": 0, \"fieldname\": \"item_code\", \"print_width\": \"\"}, {\"print_hide\": 0, \"fieldname\": \"description\", \"print_width\": \"200px\"}, {\"print_hide\": 0, \"fieldname\": \"gst_hsn_code\", \"print_width\": \"\"}, {\"print_hide\": 0, \"fieldname\": \"qty\", \"print_width\": \"\"}, {\"print_hide\": 0, \"fieldname\": \"uom\", \"print_width\": \"\"}, {\"print_hide\": 0, \"fieldname\": \"rate\", \"print_width\": \"\"}, {\"print_hide\": 0, \"fieldname\": \"amount\", \"print_width\": \"\"}], \"print_hide\": 0, \"fieldname\": \"items\", \"label\": \"Items\"}, {\"fieldtype\": \"Section Break\", \"label\": \"\"}, {\"fieldtype\": \"Column Break\"}, {\"fieldtype\": \"Column Break\"}, {\"print_hide\": 0, \"fieldname\": \"total\", \"label\": \"Total\"}, {\"fieldtype\": \"Section Break\", \"label\": \"\"}, {\"fieldtype\": \"Column Break\"}, {\"visible_columns\": [{\"print_hide\": 0, \"fieldname\": \"description\", \"print_width\": \"300px\"}], \"print_hide\": 0, \"fieldname\": \"taxes\", \"label\": \"Sales Taxes and Charges\"}, {\"fieldtype\": \"Section Break\", \"label\": \"\"}, {\"fieldtype\": \"Column Break\"}, {\"fieldtype\": \"Column Break\"}, {\"print_hide\": 0, \"fieldname\": \"grand_total\", \"label\": \"Grand Total\"}, {\"print_hide\": 0, \"fieldname\": \"rounded_total\", \"label\": \"Rounded Total\"}, {\"print_hide\": 0, \"fieldname\": \"in_words\", \"label\": \"In Words\"}, {\"fieldtype\": \"Section Break\", \"label\": \"\"}, {\"fieldtype\": \"Column Break\"}, {\"print_hide\": 0, \"fieldname\": \"other_charges_calculation\", \"align\": \"left\", \"label\": \"Item-wise Tax Breakup\"}, {\"fieldtype\": \"Section Break\", \"label\": \"Terms\"}, {\"fieldtype\": \"Column Break\"}, {\"print_hide\": 0, \"fieldname\": \"terms\", \"label\": \"Terms and Conditions Details\"}]", 
  "idx": 0, 
  "line_breaks": 0, 
- "modified": "2017-07-06 13:45:55.033384", 
+ "modified": "2017-07-06 17:47:38.279783", 
  "modified_by": "Administrator", 
  "module": "Regional", 
  "name": "GST Tax Invoice",