Some of our customers have experienced problems while developing BizTalk projects that references other BizTalk projects. This problem occurs because the project reference is lost intermittently when developing a BizTalk project in Visual Studio. We have released a hotfix for this problem in December. This hotfix resolves the issue that sometimes manifests in following ways –
Local copies of the referenced project’s binaries are deleted on deploying the referencing project
Various errors or warnings occur in Orchestration Designer on deploying the referencing project
We highly recommend that our customers apply this hotfix. If you still see any such issue in BizTalk Developer Tools after applying this hotfix, please let us know the issue through customer support.
BizTalk Developer Tools