Compilation errors not going away

I have a report in JasperSoft Studio that has some old references in it. In particular, there is an immage that I no longer need that references a .jar I don't have as well as a reference to a scriptlet that I also don't have. When the report compiled, I got complier errors for these two item. After removing these items, the errors went away.

However, I tried to build a new .jasper file with the newly edited report and the same errors returned despite the fact that these references were removed. What's going on here?

Specific errors are:

it.businesslogic.ireport.barcode.BcImage cannot be resolved ot a type

sapphire.report.JasperReportScriptlet cannot be resolved to a type