The old anchors will not be functional anymore. You can look at your old anchors to get the same position as you had before.
The new anchors will copy a lot more settings than the previous ones, please read the following text to understand them, or watch the video.

I play on a 0.53 UI Scale, which is the indended value for 1440p monitors. If you are using a 1080p monitor or using a different UI Scale I suggest you import these anchors instead as they start out with lower width/height values: https://wago.io/NSAnchors1080

https://youtu.be/RHLc_Aai89c?si=LBhiH8mhamdentFh&t=876

These Auras are used for all my Raid auras to be anchored to.
Instead of moving the actual Raid Weakauras you should move these Anchor auras.
The following settings will be taken over from the original WeakAuras if you edit them in the anchors:

• Position on Screen
• width & height of all auras
• Grow direction & Limit in Dynamic Groups (Left&Right for Icons, Up&Down for Bars)
• Group Spacing
• Font of Text Auras and SubTexts
• FontSize of Text Auras and SubTexts
• x/y position of SubTexts (not their anchor position, only x/y)
• Shadow Settings of Text Auras and SubTexts
• Texture of Bar Auras
• Icon Zoom for Icon-Auras (so the icon in bar-auras does not work)
• Border Size, Color & visibility setting
• alpha of all auras (for text auras you edit the alpha of the color, for all other auras you edit the alpha value, found under “Extra options” for Icons&Bars)
• The “Hide Timer Text” setting in all Icon Auras
• The visibility setting of the first subtext in all icon type anchors. That is the text displaying “%p”. Meaning with these last 2 settings you can choose to use the timer text provided by WA instead of OmniCC

just to be clear: to edit the position of auras you want to move the individual groups. To edit the size/look of auras you edit the aura within the group.