Could be your project is missing the primary entry in the viewdraw.ini file
DIR [p] .
DIR [r] /libs/74ls (vl74ls)
DIR [r] /libs/builtin (builtin)
DIR [w] ./under/development/alu (newalu)
An excellent practice is to run the Tools > Schematic Checker before migration, this will help clear up many migration issues.
TechNote mg578638 a video that covers migration in the netlist flow.