These messages are special. They show that in the CLD file, the input reference text forces the importing of a block that is not the same as what the specifications indicate.
This suggests that nobody checked the block that is being imported, having Composer make the connection to an existing valid external reference.
The only way to check them is to walk through the old and new blocks and see either patterns or reasons for the differences. Here are the four possibilities:
Parsing file H:\CLIENT~1\BAR\ACTIVE~1\EBY3FF5.CLD... CAD Names: 2200250A.CAD IREF **1D VVP HP STEAM makes Module 2,20,02 Block 1631 FC 26 import Module 2,53,04 Block 3678 instead of Module 2,53,04 Block 3684.
This Composer diagnostic tells you that the input reference on an import block overrides the specifications in the block that used to be there. As shown here, it can indicate an error. The output reference is wrong.
This error can be built directly into Hyperview. For more information, see the article Building error reports into the M14.