diff --git a/dbPort/src/org/compiere/dbPort/Convert.java b/dbPort/src/org/compiere/dbPort/Convert.java
index 967b123214..26c8de591e 100644
--- a/dbPort/src/org/compiere/dbPort/Convert.java
+++ b/dbPort/src/org/compiere/dbPort/Convert.java
@@ -237,6 +237,7 @@ public abstract class Convert
 	protected String[] convertIt (String sqlStatements)
 	{
 		//  Need to mask / in SQL Strings !
+		
 		final char MASK = '\u001F';      //  Unit Separator
 		StringBuffer masked = new StringBuffer(sqlStatements.length());
 		Matcher m = Pattern.compile("'[^']+'", Pattern.DOTALL).matcher(sqlStatements);
@@ -247,7 +248,8 @@ public abstract class Convert
 				group = group.replace('/', MASK);
 			if (group.indexOf('$') != -1)   //  Group character needs to be escaped
 				group = Util.replace(group, "$", "\\$");
-			m.appendReplacement(masked, group);
+			//hengsin, [ 1662983 ] Convert cutting backslash from string
+			m.appendReplacement(masked, Matcher.quoteReplacement(group));
 		}
 		m.appendTail(masked);
 		String tempResult = masked.toString();
@@ -261,8 +263,9 @@ public abstract class Convert
 		for (int i = 0; i < sql.length; i++)
 		{
 			String statement = sql[i];
+			/*
 			if (statement.indexOf(MASK) != -1)
-				statement = statement.replace(MASK, '/');
+				statement = statement.replace(MASK, '/');*/
 			result.addAll(convertStatement(statement));     //  may return more than one target statement
 		}
 		//  convert to array
diff --git a/dbPort/src/org/compiere/dbPort/Convert_PostgreSQL.java b/dbPort/src/org/compiere/dbPort/Convert_PostgreSQL.java
index 9091b931ab..aa0c9da926 100644
--- a/dbPort/src/org/compiere/dbPort/Convert_PostgreSQL.java
+++ b/dbPort/src/org/compiere/dbPort/Convert_PostgreSQL.java
@@ -193,6 +193,8 @@ public class Convert_PostgreSQL extends Convert_SQL92 {
 			//hengsin, special character in replacement can cause exception
 			String replacement = (String) retVars.get(cont);
 			retValue = m.replaceFirst(Matcher.quoteReplacement(replacement));
+			if (retValue.indexOf(replacement) < 0)
+				System.err.println("Failed to recover: " + replacement);
 			m = p.matcher(retValue);
 		}
 		return retValue;
diff --git a/dbPort/src/org/compiere/dbPort/Convert_PostgreSQLTest.java b/dbPort/src/org/compiere/dbPort/Convert_PostgreSQLTest.java
index 45efb780c0..c8d5941aef 100644
--- a/dbPort/src/org/compiere/dbPort/Convert_PostgreSQLTest.java
+++ b/dbPort/src/org/compiere/dbPort/Convert_PostgreSQLTest.java
@@ -28,6 +28,12 @@ public final class Convert_PostgreSQLTest {
 		String sqe;
 		String[] r;
 		
+		//[ 1662983 ] Convert cutting backslash from string
+		sql = "SELECT 'C:\\Documentos\\Test' FROM DUAL";
+		sqe = "SELECT 'C:\\Documentos\\Test'";
+		r = convert.convert(sql);
+		verify(sql, r, sqe);
+		
 		// Line 407 of ImportProduct.java
 		
 		sql = "ALTER TABLE LPI_Publication MODIFY AD_Client_ID NUMERIC(10) DEFAULT NULL";