[xwiki-users] xwiki import questions

Hi, I have a few questions about the xwiki's 'import' function and was wondering if I could get answer to any if not all of the following: 1. I have done an 'export' on an xwiki server instance and I then stripped the generated .xar to remove some unwanted spaces within it (this included editing the archive.xml within). When I then try to import the stripped .xar on another xwiki server instance, I get: "There was an error reading the file abc.xar. Error number 0 in 5: Package: Error when reading XML." What does this error mean? 2. If I am importing a .xar into a server instance via a web browser, then is it ok to do it from a remote client or do I have to be on the same host machine the xwiki server is on? 3. If I export spaces which contain attachments to a .xar file. Will the attachments still be available when importing the .xar file on another xwiki instance? If so, where are attachments stored in the .xar file? Thanks in advance for your help. Regards, PM.