How do I convert a file in Adobe Illustrator CS3 to a pdf without losing my spot colors?

I have recently been working on two separate files, one in InDesign and one in Illustrator CS3. I used the PDF pre-set of PDF/X-1a:2001 for both files when converting them to a pdf. My InDesign file preserved my one spot color, Pantone 285 C, while my Illustrator file seems to have converted it to CMYK. I am not sure why this happened. My question is: How do I convert a file in Adobe Illustrator CS3 to a pdf without losing my spot colors? & How can I check the pdf file once I create it, that my spot color has been preserved? I have Adobe Acrobat 8 Professional.
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GlennHarrisConnect With a Mentor Commented:
Well, like elusivedisc said, you need to check that you're saving spot colors and that you have used spot colors in the document. It'd be easier if you upload the AI file (if you do, rename the .ai to .doc or .pdf).
Another point is to be certain you've correctly applied a Pantone spot color, not a color swatch you made spot instead of process! To use pantone spot colors you should know your printed media type (matte or glossy paper) and in illustrator locate a PMS color from the Window menu > Swatch Libraries > Color Books > Pantone matte/coated.
In Illustrator:
To check that a spot color is saved to PDF: Select the Effects menu > Document Raster Effects Setting and check preserve spot colors.
RartemassAuthor, martial arts coach, IT ConsultantCommented:
Ensure the Preserve Spot Colors check box in the Raster Effects Settings dialog box is checked. This is turned off by default.
RartemassConnect With a Mentor Author, martial arts coach, IT ConsultantCommented:
To confirm the use of spot colors in PDF use the Separations Preview in Acrobat Pro.

Go to Advanced > Print Production > Output Preview
In the Preview box select Separations
It will show the colors in use.
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elusivediscAuthor Commented:
I have checked the 'Document Raster Effects Settings...' and the 'Preserve spot colors' box is checked. I have tried again to convert my file to a pdf by 'Save As' and then changing the 'Save as type' to pdf. This brings up another dialog box with the options for the pdf. I am choosing under the Standard pull down menu 'PDF/X-1a:2001 and saving.

After saving, in my Illustrator file that is now a pdf I am clicking on the item in my file that uses this spot color and it shows on my Swatch pallate as Pantone 285 C. When I open this same file in Adobe Acrobat and check out the Output Preview, this spot color is not listed.
ThinkPaperIT ConsultantCommented:
have you tried doing an "export as" instead of "save as" and see if it saves your settings?
elusivediscAuthor Commented:
Thanks for your response. I have not tried to Export. I found 'Export' under the file menu, though I do not see pdf as an option under the 'Save as type' pull down tab when exporting. Is there some place else in Illustrator CS3 that I can 'Export as...'?
In the PDF choose the Advanced menu > Print Production > Ink Manager; If your spot isn't in the pdf then the problem is likely your PDF compatibility is too low. When you choose the preset for PDF/X 1A 2001 did you change it from Acrobat 4 to Acrobat 8 compatible?
elusivediscAuthor Commented:
Glenn, Thanks for the reply. When I choose the Adobe PDF Preset: [PDF/X-1a:2001], there are two pull down boxes that are labeled Standard and Compatibility underneath. Standard= PDF/X-1a:2001, Compatibility= Acrobat 4 (PDF 1.3). When I save the file, my spot color is CMYK.
If I change the Compatibility to Acrobat 8 (PDF 1.7), Standard defaults to None, but the Adobe PDF Preset is now: [PDF/X-1a2001] (Modified). When I save the file, my spot color is CMYK.
If I change the Standard back to PDF/X-1a2001, the Compatibility goes back to Acrobat 4 (PDF 1.3), When I save the file, my spot color is CMYK.
elusivediscAuthor Commented:
Glenn, Sometimes the simpliest of answers is the best. Although my color was labeled Pantone 285 C, it was a process color. I converted it to a spot color and am having no problems at all!!! Thank you for your time! I am so sorry I did not notice this myself!
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