Text to Curve Issue

[osmond]

no Pitstop 7 - Acrobat 7

when there is hidden text under a background, when we convert text to curve. the text under the background shows up in front. How can we avoid this?

Before converting"

text
________ - bacground

text _ hidden under the background

after convert:
text
hidden text
________ - background

Thanks in advance. i'll post later the file.