...Why are you exporting to Flexi? I create print files in Corel all of the time. If it's just a print then export a150 dpi RGB jpg and bring it straight into Production Manager...
Same as we do. Except always as a tif not jpg.
Why bother with a tif?...
Why bother with a tif? A one use jpg has every bit the acuity of a tif at a fraction of the disk space and time. The dreaded jpg loss is largely a thing of myth, something you use to scare small children into going to bed. If you're continually loading a jpg and then re-saving it you might notice some change in the content after a while. A long while if you save it correctly with zero smoothing and compression.