Recently I came across this article 
<a href='http://www.eadocsoftware.com/pdf/63_MLM_How-Can-the-Contractor-Participate-in-the-Owner-CMs-Environment.pdf'>63_MLM_How Can the Contractor Participate in the Owner CMs Environment</a> talking about work arounds for using Primavera Contract Manager in a collaborative environment. When explaining how EADOC allows all parties to share and exchange information like submittal comments securely between project participants we find many users believe this functionality is part of Primavera's Contract Manager.  This is because Oracle Primavera spends a lot of money marketing Contract Manager as delivering "project team collaboration", this is only true if you want every member of the team to have access to every piece of information. Essentially this article concludes that Owners and CM's will need to buy or develop their own application for allowing contractors to submit information directly into Contract Manager in order to deliver true collaboration.  Essentially when comparing EADOC's project management application to the options below you will save 1-2 FTE on a project using EADOC or $250-$2M on custom software development compared to Primavera contract manager. 

Option A from the article 
"The  Contractor uses same  Contract Management  system as owner. This can be problematic to execute, even when the requirements are clearly spelled out in the contract by the Owner or CM. Contractors and architects will resist using the owner (or CM’s) system to manage the process of creating or reviewing documents. Most will keep this process internal and only enter the final "official document" in the owners system.  Contractors  and architects require full “read/write” access to the owners Contract Management environment in order to  originate  any document  or attach any backup documentation. If  a  document (RFI, Submittal) is managed inside a contractors specific project in Contract Management (as opposed to being manually re-entered in the Construction Manager's project  by the Owner), <strong>all review comments can be seen by the contractor,</strong>  in addition to the official response. These  two issues (“read/write”  access and the contractor being able to see reviewer’s comments) are often fatal flaws when deploying Contract Management as a project team database.  While  Option A  is a common approach,  our experience is this option does not work well. "

Option B from the article (zero cost savings over an excel spreadsheet since the CM or Owner has to enter all data into Contract Manager)
"The contractor submits an electronic copy of their document.  <strong>The Construction Manager’s staff logs  the document into their  Contract  Management  database  system, routing the document for review and recording  each reviewer’s  comments.</strong> The  advantage to  this approach  is,  the contractor may continue to use whatever system they currently use (you'd be surprised how many do not have a standard system), to create RFI’s, proposal, submittals (85% of all documents submitted) into a printed  PDF electronic document  (documents cannot be scanned to PDF  - scans are not searchable). The printed document is emailed to the Construction Manager by the contractor.  The  contractor is never given access to  the Owners  Contract Management  System. This prevents the contractor from seeing others comments, which is often an important issue for the owners team. "
 