I grade my ideas based on RICE/WSJF scoring and then insert those values into the weighted formula in order to compare different ideas to each other.
Then i look in the matrix based on weighted formula to decide which "idea" to develop and push it for development.
Then i go back to the matrix in order to "re-evaluate" which idea´s to put into the pipeline/roadmap next. But they still have the same weighted value because the ideas currently in development or actually already released is taking up the "weighted formula" top spot.

Am i handling this incorrectly, how should i work with this?
Should i "archive" the ideas? I want to be able to "historically" see what the idea had in scoring.