Please note MicroStrategy only supports export to PDF of custom visuals from dossiers. When you export report services documents to PDF, custom visuals will be shown as a grid.
With dossiers, you may also see error messages when the export happens. For instance, the message could be something like Failed to display visualization: HCStackedBarChart because failed to get pluginsVisList from Failed due to NetworkError: Failed to execute ‘send’ on ‘XMLHttpRequest’: Failed to load
This is typically because of network configuration/permissions. You can also confirm this by trying to export a dossier with some other custom visual (like the D3WordCloud provided by MicroStrategy in the first row of the custom visuals). You will see the export fail with the same reason.
The access issues may arise from the type of user and authentication used on both machines. Here are couple of relevant links from MicroStrategy that describe this problem and also suggest some workarounds.
Please review and let us know if these apply to your case. In this scenario it is best to contact MicroStrategy to make sure best practices are being followed for setting up the network for export.
If the export is failing because of a different symptom then please contact Vitara support.