Yes, you can take the old RadAjaxLoadingPanel images from the attached ZIP. Navigate to
Skins / SkinName / Common / loading.gif
Then use the image to override the RadAjaxLoadingPanel background image style from the skin that you are using:
Here is an example which shows how to use a custom skin for RadAjaxLoadingPanel. However, if you only need to change the image, using a whole custom skin is not necessary.
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