Maybe, but you will need to let us into your secrets before we can even begin to answer
The answer below is quite long winded, but we will help you along the way when there is a clearer route.
Why are you only considering Census facts when
AS handles a lot more?
Which of your existing facts are you hoping to convert, and how is their current data organised?
How much data is involved? How many Individuals? How many Source records? How many Media?
Which Ancestral Sources (
AS) format options are you considering?
Remember that as well as Census,
AS copes with Birth, Baptism, Marriage, Death & Burial key facts for the Principal person(s), and many other facts such as Occupation and Residence for close relatives.
So even when capturing Census returns
AS can create/update not only Census facts, but also Occupation, Residence, Birth, and other facts and link them all to the same Source Citation.
There is also the choice between Method 1 'splitter' Source Citations and Method 2 'lumper' Source Citations.
Have you tried the
AS tutorials on the
Family Historian Sample Project to gain an understanding of how it operates?
See ancestralsources:index|> Ancestral Sources and particularly the
Ancestral Sources Tutorial ~ Enter Census Facts.
There is a lot to think about.
Some users when faced with such decisions do decide to enter all the data again because it gives the opportunity to review all the Source documents afresh and perhaps discover new documentation that was not available when the research was previously undertaken, e.g. the UK 1939 Register. I am sure some of those users will give their opinions.
It is not necessary to update all your data at once. You can take your time.
You do not even have to convert anything, but just apply
AS to any new research.