Problem when linking a blueprint to a branch

Hi,

When I link a blueprint to a branch, I am asked to choose an already existing blueprint in my project (https://launchpad.net/lidarformat). I choose the blueprint I want, however, in the branch description page, an other blueprint appears.
For example, if I want to link the blueprint named "Factory policy error handling" (https://blueprints.launchpad.net/lidarformat/+spec/factory) to the branch "lp:~olitour/lidarformat/branch-factory" (https://code.launchpad.net/~olitour/lidarformat/branch-factory), I can choose this blueprint, it seems to work, but, on the branch page, the linked blueprint is not the one I choosed. It is a blueprint related to another project ("Implementar el patrón factory" from "MoonDragon" project). Amazing !

What am I doing wrong ?

Regards,

Olivier