Blade issue?

IDS 12.10.FC12 Solaris 10 1/13 I have a database that previously had two blades registered. I unregistered both of them. When I use myexport and myimport on that database, I get a -9628 error identifying "sysbldsqltext" as a missing data type. "sysbldsqltext" is the data type for a column in the "sysbldobjects" table. The "sysbldobjects" table is created by the schema file when myimport executes. I note that, there are several blade related tables in the database, after having removed all the blades. All of them have 0 rows, except the "sysbldobjkinds" table, which appears to be a sort of meta table containing information about the kinds of objects that might be present in a blade. So, effectively, all the "sysbld*" tables are empty, or meaningless (given that there are no blades installed). Perhaps, I should just delete those sysbld* tables? I'm thinking that should fix this problem. Does that sound right? If so, I wonder why blademgr didn't get rid of them when i unregistered the last blade? If NOT so, then what could be the problem? Thank you. DG