DFS Data deletion

We have users complaining about missing files from 1 DFS share. Now that share is on Server A and replicated to Server B.

We have DFS referral disabled for Server B, which means any changes on shares are going to Server A in background.

We inspected ConflictAndDeletedManifest.Xml and below is some info from XML. Entire Xml file has time stamp of 12 hours for all files.

<Resource>
  <Path>\\.\F:\ENVIR01_Share\Shared\Recycling Working Group\Working Group\WasteWise Hierarchy.pptx</Path> 
  <Uid>{F94A944B-A080-426D-9AF1-1E76AB1BBAA2}-v353103</Uid> 
  <Gvsn>{D6B46A34-4DA3-4722-99DF-A98B461FAF18}-v2234062</Gvsn> 
  <PartnerGuid>{88452909-86DC-47AB-84E0-86497553C671}</PartnerGuid> 
  <Attributes>20</Attributes> 
  <NewName>WasteWise Hierarchy-{D6B46A34-4DA3-4722-99DF-A98B461FAF18}-v2234062.pptx</NewName> 
  <Time>GMT 2012:10:19-20:53:42</Time> 
- <Type>
  <UpdateConflict /> 
  </Type>
  <Files>1</Files> 
  <Size>96918</Size> 
  </Resource>

Security logs for server are over written as its been 10 days. Is this manual deletion by someone or because of any conflicts?

Looking for some help on possible reasons for deletion

~Cheers, Rohit Kochher