Configuration:
- Company Currency: MXN
- Tax 16%.
- Multicurrency, MXN and USD.
- Decimal precision: 4
- Currency Data:
MXN: rate 1.0
USD rates

| Database time | rate | Local time (Mexico) | 
| --- | --- | --- |
| 2016-09-09 00:00:01 | 0.054440 | 2016-09-08 17:00:01 |
| 2016-10-11 00:00:01 | 0.051815 | 2016-10-10 17:00:01 |

Steps to reproduce:

1. Create an invoice for 600 USD  + tax (16%) with date 09/09/16 (September 9, 2016) and when you validate in the journal entry is $12,784.7172 MXN.
3. Create a bank statement in MXN and add a line with date 11/10/16 (October 11, 2016) and amount $13,372.80 MXN.
4. When reconcile select the invoice and there is a difference ($588.0828 MXN) add a line with the difference and select an account for the difference. 
<img width="607" alt="captura de pantalla 2016-11-04 a la s 17 23 26" src="https://cloud.githubusercontent.com/assets/6758279/20025385/749605a2-a2b3-11e6-8b1a-4e9fbf1521ed.png">

**Note that the amount of difference is $588.08 in when you select the account**

5. Click on reconcile.

Expected behavior:
- Reconcile the invoice and create account move.

Current behavior:
- Raise an error  `Wrong credit or debit value in accounting entry !`

![captura de pantalla 2016-11-01 a la s 19 18 52](https://cloud.githubusercontent.com/assets/6758279/19913537/1c272866-a069-11e6-9b06-5851681c7fa5.png)

addons/account/models/account_move.py
""" Returns the domain which is common to both manual and bank statement reconciliation.
            :param excluded_ids: list of ids of move lines that should not be fetched
            :param str: search string
        """
        context = (self._context or {})
        if excluded_ids is None:
            excluded_ids = []
        domain = []
        if excluded_ids:
            domain = expression.AND([domain, [('id', 'not in', excluded_ids)]])
        if str:
            str_domain = [
                '|', ('move_id.name', 'ilike', str),
                '|', ('move_id.ref', 'ilike', str),
                '|', ('date_maturity', 'like', str),
                '&', ('name', '!=', '/'), ('name', 'ilike', str)
            ]
            try:
                amount = float(str)
                amount_domain = [
                    '|', ('amount_residual', '=', amount),
                    '|', ('amount_residual_currency', '=', amount),
                    '|', ('amount_residual', '=', -amount),
                    '|', ('amount_residual_currency', '=', -amount),
                    '&', ('account_id.internal_type', '=', 'liquidity'),
                    '|', '|', ('debit', '=', amount), ('credit', '=', amount), ('amount_currency', '=', amount),