openpyxl 2.6 does not preserve conditional formatting
*Created originally on Bitbucket by [tadeboro (Tadej Borovšak)](https://bitbucket.org/%7B5115b682-a1a2-4c3e-ab20-c99b413b8c9b%7D/)*
# Summary #
When loading the workbook that contains cells with multiple conditional formatting conditions, only the last one seems to be loaded.
# How to replicate #
1. Download attached xlsx file that has a cell with 2 conditional formatting conditions.
2. Load and save workbook using openpyxl.
# Expected outcome #
Newly saved file has the same conditions as the original.
# Actual outcome #
Newly saved file contains only last condition.
# Minimal example that demonstrates the issue #
```
#!python
import openpyxl
wb = openpyxl.load_workbook("test.xlsx")
wb.save("newtest.xlsx")
```
# Notes #
This same procedure works with latest openpyxl 2.5.x.
*Attachments:* [test.xlsx](/uploads/c83e085407c49800b8e70905ca7b2732/test.xlsx)
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