Issue with HTML output in snippets file

[fbonacin10]

Hi to everybody
I got an issue with Madcap while publishing
I copied a tablestyle from a project to another (in the old one everything works correctly)
Then I linked a table in a snippet to that tablestyle
This table has two headers, one for PDF and one for HTML; the only difference is the color of the row
i set correctly the conditional text (also while i inspect the html page in chrome i find the correct conditional text) but the color is wrong
So i converted the snippet to text in the topic but the result is the same
And it doesn't work for all the snippets

here is a part of the text:
<thead>
<tr class="TableStyle-SM_Notice-Head-White" MadCap:conditions="_pubblicazione.Output_soloPDF">
<th class="TableStyle-SM_Notice-HeadD-Messaggio-White">AVVISO</th>
</tr>
<tr class="TableStyle-SM_Notice-Head-Blue" MadCap:conditions="_pubblicazione.Output_soloHTML">
<th class="TableStyle-SM_Notice-HeadD-Messaggio-Blue">
<p style="font-style: italic;">AVVISO</p>
</th>
</tr>
</thead>


Anyone had the same issue??