XSL: import two files with the same template

i have two imports: header and datepicker Header and datepicker files has:

<xsl:template match="/">

In main file i have:

<xsl:import href="incHeader.xsl"/>
<xsl:import href="incDatapicker.xsl"/>

and loading:

<xsl:apply-imports/>

Is there are any ways to make no changes in header template properties, only in datepicker with mode, or name and in main file with no changing loading code?

P.S. If i put code like this, it loads only incDatepicker.xsl file. if i put name or mode only on one file, it doesn't load.