Export as XLS Problems

Hello, i have several problems while exporting my reports (Jasperserver 6.1.0) as an Excel-File.

I tried several settings and properties, but most of them did not help.

Note: i can NOT set the properties in each report, because i have to manage about 25+ reports - and future property-changes would end horrible if i have to set them in each report ...
So i tried to use the 'jasperreports.properties' in the 'apache-tomcat\webapps\jasperserver\WEB-INF\classes' folder
and the 'applicationContext.xml' in the 'apache-tomcat\webapps\jasperserver\WEB-INF'

What do i need?
Short form: something like the CSV exporter does ==> no font colors, no wierd column or row size changes
but i cannot use the CSV exporter, because the encoding does not work for french characters, Umlaute and so on (example: 'Erlöse')
SOLUTION for CSV:  net.sf.jasperreports.export.csv.write.bom=true
setting:

net.sf.jasperreports.export.character.encoding=ISO-8859-1
net.sf.jasperreports.default.xls.encoding=ISO-8859-1
net.sf.jasperreports.default.xlsx.encoding=ISO-8859-1
net.sf.jasperreports.default.csv.encoding=ISO-8859-1

in 'jasperreports.properties' did not help

Long form:
* i would like to disable all kind of formatting (ignore the report specific formatting):
all fonts are black,
all fonts use the same size (in contrast to the normal PDF report)
* no column or row merging


current settings in jasperreports.properties:

net.sf.jasperreports.export.xls.column.width=100
net.sf.jasperreports.export.xls.collapse.row.span=true
net.sf.jasperreports.export.xls.remove.empty.space.between.columns=false
net.sf.jasperreports.export.xls.ignore.cell.background=true
com.jaspersoft.jrs.export.xls.paginated=false

and the 'applicationContext.xml':

<bean id="xlsExportParameters" class="com.jaspersoft.jasperserver.api.engine.jasperreports.common.XlsExportParametersBean">
<property name="detectCellType" value="false"/>
<property name="onePagePerSheet" value="false"/>
<property name="removeEmptySpaceBetweenRows" value="true"/>
<property name="removeEmptySpaceBetweenColumns" value="true"/>
<property name="whitePageBackground" value="false"/>
<property name="ignoreGraphics" value="true"/>
<property name="collapseRowSpan" value="false"/>
<property name="ignoreCellBorder" value="true"/>
<property name="fontSizeFixEnabled" value="false"/>
<property name="maximumRowsPerSheet" value="0"/>
<property name="xlsFormatPatternsMap" ref="formatPatternsMap"/>
</bean>

thanks for help